List of biographies / Ot
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Ot
Ota
- Ōta Hirokazu (* 1971), Japanese football player
- Ōta Nampo (1749–1823), Japanese writer
- Ōta, Akihiro (* 1945), Japanese politician
- Ota, Alessandro Saša (1957–1994), Italian journalist and photographer
- Ota, Aya (* 1995), Japanese shot putter
- Ōta, Dōkan (1432–1486), member of a Japanese ruling family
- Ōta, Fusae (* 1951), Japanese politician
- Ōta, Gakuji (* 1990), Japanese soccer player
- Ōta, Hiroko (* 1954), Japanese politician
- Ōta, Hisa (1868–1945), Japanese dancer and actress
- Ōta, Kanji (* 1959), Japanese jazz musician
- Ōta, Kaoru (1912–1998), Japanese labor movement leader and politician
- Ōta, Kazuki (* 1993), Japanese soccer player
- Ōta, Keisuke (* 1979), Japanese soccer player
- Ōta, Keisuke (* 1981), Japanese soccer player
- Ōta, Kengo (* 1995), Japanese soccer player
- Ōta, Kijirō (1883–1951), Japanese painter
- Ōta, Kōsuke (* 1982), Japanese football player
- Ōta, Kōsuke (* 1987), Japanese football player
- Ōta, Masahiro (* 1970), Japanese soccer player
- Ōta, Masayuki (* 1973), Japanese football player
- Ōta, Minoru (1891–1945), Admiral of the Imperial Japanese Navy, commanding naval ground forces at the Battle of Okinawa
- Ota, Miwa (* 1968), Japanese cross-country skier
- Ōta, Mizuho (1876–1955), Japanese writer
- Ōta, Seiichi (* 1945), Japanese politician
- Ōta, Setsuko , Japanese badminton player
- Ōta, Shinji (* 1973), Japanese badminton player
- Ōta, Shinobu (* 1993), Japanese wrestler
- Ōta, Shūsuke (* 1996), Japanese football player
- Ōta, Takamitsu (* 1970), Japanese football player
- Ōta, Tetsurō (* 1989), Japanese football player
- Ota, Tetsuya (* 1959), Japanese racing driver
- Ōta, Wataru (* 1981), Japanese soccer player
- Ōta, Yōko (1906–1963), Japanese writer
- Ōta, Yoshiaki (* 1983), Japanese soccer player
- Ōta, Yoshiko , Japanese skeleton pilot
- Ōta, Yūki (* 1985), Japanese foil fencer
- Ōta, Yukina (* 1986), Japanese figure skater
- Otacilia Severa, Marcia , wife of the Roman Emperor Philip Arab
- Otacilius Catulus, Manius , Roman suffect consul (88)
- Otacilius Crassus, Manius , Roman consul 263 BC. BC and 246 BC Chr.
- Otacilius Crassus, Titus , Roman consul 261 BC. Chr.
- Otagiri, Michiharu (* 1978), Japanese soccer player
- Otahal, Hannes (* 1960), Austrian blues and boogie pianist
- Otaiba, Yousef Al (* 1974), Arab diplomat, Ambassador of the United Arab Emirates to the United States of America
- Otaibi, Mohammed bin Ibrahim bin Amer Al- , Saudi diplomat
- Otaka, Hisatada (1911–1951), Japanese composer
- Ōtaka, Tomomi (* 1976), Japanese biathlete
- Otaka, Tomoo (1899–1956), Japanese law scholar
- Ōtaka, Yoshiko (1920–2014), Japanese singer, actress and politician
- Otakar I. , Count in Carantania and royal emissary in the Bavarian Ostmark
- Otakar II. , Count in Traungau and in Chiemgau
- Otake, Fumio (1900–1962), Japanese sinologist
- Ōtake, Issei (* 1995), Japanese volleyball player
- Ōtake, Masato (* 1971), Japanese soccer player
- Ōtake, Nami (* 1974), Japanese soccer player
- Ōtake, Naoto (* 1968), Japanese soccer player
- Ōtake, Ryūto (* 1988), Japanese soccer player
- Ōtake, Shinrō (* 1955), Japanese painter
- Ōtake, Yōhei (* 1989), Japanese football player
- Ōtaki, Ami (* 1989), Japanese soccer player
- Otamendi, Nicolás (* 1988), Argentinian football player
- Otanes , member of the nobility in Persia
- Otanes , Persian judge and general
- Otáñez, Aureliano (1911–1975), Venezuelan colonel and politician
- Otang, Tion , Kiribati politician, President of Kiribati
- Ōtani, Hayato (* 1997), Japanese soccer player
- Ōtani, Hidekazu (* 1984), Japanese soccer player
- Ōtani, Ichiji (1912–2007), Japanese football player
- Ōtani, Ikue (* 1965), Japanese voice actress
- Ōtani, Keishi (born 1983), Japanese soccer player
- Ōtani, Kōki (* 1989), Japanese football player
- Ōtani, Kōshō (1911-2002), Japanese Buddhist clergyman; Chief priest of the temple Nishi Hongan-ji of the Jōdo-Shinshū
- Ōtani, Kōzui (1876–1948), Japanese Buddhist clergyman; Chief priest of the temple Nishi Hongan-ji of the Jōdo-Shinshū
- Ōtani, Masashi (* 1983), Japanese soccer player
- Ōtani, Mio (* 1979), Japanese soccer player
- Ōtani, Naoki (* 1995), Japanese soccer player
- Ōtani, Takehiro (* 1980), Japanese soccer player
- Ōtani, Takejirō (1877–1969), Japanese entrepreneur
- Ōtani, Yoshitsugu (1559–1600), Japanese samurai
- Otaño, Nemesio (1880–1956), Basque musicologist and composer
- Otarbayev, Samat (* 1990), Kazakh football goalkeeper
- Otarion (* 1961), German composer
- Otarsultanow, Jamal Sultanowitsch (* 1987), Russian wrestler
- Otavă, Bogdan (* 1987), Romanian bobsledder
- Otávio (* 1994), Brazilian soccer player
- Otávio (* 1995), Brazilian soccer player
Otb
- Otberg, Mari (* 1969), German visual artist and fashion designer
- Otbert , German faith healer
- Otbert von Liège († 1119), Bishop of Liège
Otc
- Otcasek, Eron (* 1973), American actor
- Otčenáš, Martin (* 1987), Slovak biathlete and cross-country skier
- Otčenášek, Jan (1924–1979), Czech writer and screenwriter
- Otčenášek, Karel (1920–2011), Czech theologian and Bishop of Königgrätz
- Otchere, Jacqueline (* 1996), German pole vaulter
Ote
- Oțeanu-Bunea, Smaranda (* 1941), Romanian composer and music critic
- Otegi, Arnaldo (* 1958), Spanish-Basque nationalist politician
- Oteiza, Jorge (1908–2003), Basque sculptor and painter
- Ötelbajew, Muchtarbai (* 1942), Kazakh mathematician
- Otele, Olivette (* 1970), Cameroonian-British historian and university professor
- Oțelea, Cornel (* 1940), Romanian handball player, coach and sports official
- Otellini, Paul (1950-2017), American executive, chief executive officer of Intel
- Ötembajew, Jerik (* 1966), Ambassador to Kazakhstan
- Oteng, Oteng (* 1990), Botswana boxer
- Oteo, David (* 1973), Mexican soccer player
- Oteo, Jurgi (* 1996), Spanish soccer player
- Oterholm, Anne (* 1964), Norwegian writer
- Oteri, Cheri (* 1962), American actress, screenwriter and comedian
- Oterma, Liisi (1915–2001), Finnish astronomer and discoverer of many asteroids and comets
- Otero Largacha, Agustín (1940-2004), Colombian clergyman, auxiliary bishop in Bogotá
- Otero Pedrayo, Ramón (1888–1976), Spanish writer
- Otero Silva, Miguel (1908–1985), Venezuelan writer, journalist, humorist and politician
- Otero, Alejandro (1921–1990), Venezuelan artist, author and cultural organizer
- Otero, Alejandro († 2013), Uruguayan police officer and football referee
- Otero, Blas de (1916–1979), Spanish poet
- Otero, Celso (* 1958), Uruguayan football goalkeeper
- Otero, David (* 1980), Spanish singer, guitarist and songwriter
- Otero, Jorge (* 1969), Spanish football player
- Otero, Juan , Uruguayan soccer player
- Otero, Lisandro (1933–2008), Cuban writer, journalist and diplomat
- Otero, Manolo (1942–2011), Spanish singer and actor
- Otero, Marcelo (* 1971), Uruguayan football player
- Otero, Mariano S. (1844–1904), American politician
- Otero, Miguel Antonio (1859–1944), American politician
- Otero, Miguel Antonio Sr. (1829–1882), American politician
- Öteschow, Almas (* 1988), Kazakh weightlifter
- Otevřel, Jaroslav (* 1968), Czech ice hockey player
- Otey, James Hervey (1800–1863), American Christian teacher and first Episcopalian Bishop of Tennessee
- Otey, Peter J. (1840–1902), American politician
Otf
- Otfrid von Weißenburg († 875), Old High German poet
Otg
- Otgar , Prince-Bishop of Eichstätt
- Otgar von Mainz († 847), Archbishop of Mainz
- Otgiva of Luxembourg († 1030), by marriage Countess of Flanders
- Otgonbayar, Ershuu (* 1981), Mongolian painter
- Otgondalai, Dordschnjambuugiin (* 1988), Mongolian boxer
- Otgontsetseg, Dawaasüchiin (* 1990), Mongolian wrestler
- Otgontsetseg, Galbadrachyn (* 1992), Kazakh judoka
- Otgontsetseg, Tschinbatyn (* 1991), Mongolian cross-country skier
Oth
- Othegraven, Albert von (1798–1866), Prussian major general
- Othegraven, August von (1864–1946), German composer and music teacher
- Othegraven, Friedrich August von (1802–1878), Prussian lieutenant general and commander of Breslau
- Othegraven, Heinrich von (1821–1899), German theater actor, director and director
- Othegraven, Karl Thomas von (1769–1844), Prussian lieutenant general
- Otheguy, Santiago (* 1973), Argentine-French film director
- Othemsmeister , fresco painter on Gotland
- Othenin-Girard, Dominique (* 1958), Swiss film director
- Othma, Paul (1905–1969), German worker, strike leader in the popular uprising of June 17, 1953
- Othman al-Busaidi (* 1992), Omani sprinter
- Othman, Abdul Hamid (1939–2011), Malaysian politician
- Othman, Jamal (* 1986), Swiss figure skater
- Othman, Mazlan (* 1951), Malaysian astrophysicist, director of UNOOSA
- Othman, Mohammed Adiq Husainie (* 1991), Malaysian track and road cyclist
- Othman, Mohammed Othman (* 1946), Egyptian politician
- Othman, Ramatoulie , Gambian writer
- Othmani, Saadeddine (* 1956), Moroccan politician
- Othmann, Ronya (* 1993), German writer and journalist
- Othmayr, Caspar (1515–1553), German Protestant clergyman and composer of the Renaissance
- Othmer, Carl (1951–2019), German lawyer and State Councilor from Bremen
- Othmer, Donald F. (1904-1995), American chemical engineer
- Othmer, Hartwig (* 1963), German lawyer
- Othmer, Markus (* 1965), German radio and television presenter
- Otho (32–69), Roman emperor
- Otho, Georg (1634–1713), German orientalist
- Otho, Johann († 1581), Flemish humanist, pedagogue, cartographer and scholar
- Otho, Johanna , Flemish humanist and poet
- Otho, Valentinus († 1603), German mathematician
- OTHON (* 1979), Greek composer, songwriter and pianist
- Othoneos, Alexandros (1879–1970), Greek politician and Prime Minister
- Othoniel, Jean-Michel (* 1964), French sculptor
- Othwin († 984), Bishop of Hildesheim
Oti
- Otigba, Kenny (* 1992), Hungarian football player
- Otiman, Păun (* 1942), Romanian agricultural scientist and university rector
- Otis (born 1991), American wrestler
- Otis, Brooks (1908–1977), American classical philologist
- Otis, Carré (* 1968), American model, actress
- Otis, Elisha Graves (1811–1861), American inventor
- Otis, Elwell Stephen (1838–1909), American general and military governor
- Otis, George (1917–2007), American evangelist
- Otis, Glenn K. (1929-2013), American officer
- Otis, Harrison Gray (1765–1848), American politician
- Otis, Harrison Gray (1837-1917), American publisher
- Otis, James Jr. (1725–1783), American lawyer, politician, and independence fighter
- Otis, John (1801-1856), American politician
- Otis, John G. (1838-1916), American politician
- Otis, Johnny (1921–2012), American band leader, producer, and talent scout
- Otis, Laini (* 1978), German author of contemporary romance and young adult novels
- Otis, Laura , American literary scholar, university professor
- Otis, Norton P. (1840-1905) American politician
- Otis, Samuel Allyne (1740-1814), American politician
- Otis, Shuggie (* 1953), American musician and record producer
Otj
- Otjen, Theobald (1851–1924), American politician
Otk
- Otkalenko, Nina Grigoryevna (1928–2015), Soviet athlete
Otl
- Otlet, Paul (1868–1944), Belgian pioneer of information management and founder of modern documentation science
- Otloh von St. Emmeram , spiritual writer
Otm
- Otmachow, Oleg (* 1966), Russian marathon runner
- Otmachow, Wladislaw Valerjewitsch (* 1974), Russian ice hockey player and coach
- Otman Baba († 1478), Islamic dervish
- Otmar von St. Gallen († 759), founder and first abbot of the St. Gallen monastery, saint
- Otmar, Johann , German printer
Otn
- Otnes, Per (* 1941), Norwegian sociologist
Oto
- Otoguro, Takuto (* 1998), Japanese wrestler
- Ōtomo no Tabito (665–731), Japanese poet of ancient times
- Ōtomo no Yakamochi (718–785), poet in Japan during the Nara period
- Otomo, Katsuhiro (* 1954), Japanese manga artist, screenwriter and director
- Ōtomo, Satoru (* 1957), Japanese astronomer
- Ōtomo, Satoshi (* 1981), Japanese-Filipino soccer player
- Otomo, Yoshihide (* 1959), Japanese musician and composer
- Ōtomo, Yoshio (* 1947), Japanese jazz musician (alto and soprano saxophone)
- Otomo-Yamamoto, Ai (* 1982), Japanese volleyball player
- Otoo, Jeffrey (* 1998), Ghanaian soccer player
- Otoo, Nii Ayikoi , Ghanaian Justice Minister and Attorney General
- Otoo, Sharon Dodua (* 1972), British writer
- O'Toole, Annette (* 1952), American actress
- O'Toole, Donald L. (1902–1964), American lawyer and politician
- O'Toole, Kate (born 1960), Irish actress
- O'Toole, Lorcan (born 1983), Irish actor
- O'Toole, Mark (* 1963), English clergyman, Roman Catholic Bishop of Plymouth
- O'Toole, Mark (born 1964), British singer and bassist
- O'Toole, Paddy (born 1938), Irish politician
- O'Toole, Peter (1932-2013), Irish actor
- O'Toole, Robert F. (* 1936), American religious, Jesuit, theologian, professor, rector of the Pontifical Biblical Institute
- Otoom, Ayman (* 1972), Jordanian writer
- Ōtori, Keisuke (1833–1911), Japanese government official
- Otormín, Leandro (* 1996), Uruguayan football player
- Otowa, Nobuko (1924–1994), Japanese actress
Otr
- Otremba, Erich (1910–1984), German geographer
- Otremba, Hendrik (* 1984), German musician, author and visual artist
- Otremba, Walther (* 1951), German administrative officer
- Otreras, Gastón (* 1985), Argentinian football player
- Otrok, Thomas (* 1997), Austrian actor
- Otruba, Gustav (1925–1994), Austrian economic historian, sociologist and author
Ots
- Ots, Georg (1920–1975), Soviet-Estonian opera singer (baritone)
- Otsa, Harri (1926-2001), Estonian composer
- Ötsch, Alfred (* 1953), Austrian manager
- Ötsch, Walter (* 1950), Austrian scientist
- Otschigawa, Sofja Albertowna (* 1987), Russian boxer
- Otschirbat, Punsalmaagiin (* 1942), Mongolian politician
- Otschirsüren, Erdene-Otschiryn (* 1985), Mongolian cross-country skier
- Ōtsu, Yōsei (* 1995), Japanese football player
- Ōtsu, Yūki (* 1990), Japanese soccer player
- Ōtsubo, Fumio (* 1945), Japanese manager
- Ōtsubo, Hirokazu (* 1979), Japanese soccer player
- Ōtsubo, Takanobu (* 1976), Japanese long-distance runner
- Otsuji, Kanako (* 1974), Japanese politician and LGBT activist
- Ōtsuka Miki (1891–1945), Japanese rear admiral
- Ōtsuka, Ai (* 1982), Japanese singer-songwriter
- Ōtsuka, Akio (* 1959), Japanese voice actor
- Ōtsuka, George (* 1937), Japanese jazz musician (drums) and band leader
- Ōtsuka, Hironori (1892–1982), Japanese karateka, founder of the Wado-Ryu karate style
- Ōtsuka, Hisao (1907–1996), Japanese economic historian
- Ōtsuka, Jirō (1934-2015), Japanese Wadō Ryu Karate Grand Master
- Otsuka, Julie (* 1962), American writer
- Ōtsuka, Kazuyuki (* 1982), Japanese soccer player
- Ōtsuka, Kōhei (* 1959), Japanese political scientist and politician
- Ōtsuka, Paul Yoshinao (* 1954), Japanese clergyman and Roman Catholic bishop of Kyoto
- Ōtsuka, Sae (* 1995), Japanese musician and seiyū
- Ōtsuka, Shinji (* 1975), Japanese soccer player
- Ōtsuka, Shin'ya (* 1980), Japanese badminton player
- Ōtsuka, Shō (* 1995), Japanese football player
- Ōtsuka, Shōhei (* 1990), Japanese football player
- Ōtsuka, Shōta (* 1987), Japanese football player
- Ōtsuka, Sonoe , Japanese badminton player
- Ōtsuka, Tadahiko (1940–2012), Japanese karate master
- Ōtsuka, Tadashi (* 1978), Japanese badminton player
- Otsuka, Takeru (* 2001), Japanese snowboarder
- Ōtsuki Fumihiko (1847–1928), Japanese lexicographer, historian and linguist
- Ōtsuki Gentaku (1757-1827), samurai
- Ōtsuki, Hiroshi (* 1980), Japanese soccer player
- Ōtsuki, Shūhei (* 1989), Japanese soccer player
- Ōtsuki, Tsuyoshi (* 1972), Japanese soccer player
- Ōtsuki, Yūhei (* 1988), Japanese soccer player
Ott
- Ott von Bátorkéz, Karl (1738–1809), Austrian Lieutenant Field Marshal
- Ott von Echterdingen, Michael (1479–1532), Imperial Supreme Feldzeugmeister and Councilor of the Holy Roman Empire
- Ott, Adolf (1849–1918), German writer and officer
- Ott, Adolf (1869–1926), German priest and official
- Ott, Adolf (1904–1973), German mass murderer, leader of Sonderkommando 7b in Belarus
- Ott, Alexander (1908–1978), German writer
- Ott, Alfred (1934–2020), German football referee
- Ott, Alice Sara (* 1988), German pianist
- Ott, Andrea (* 1949), German translator
- Ott, Andreas C. (1875–1934), Swiss Romanist and Medievalist
- Ott, Angelika (* 1942), German-Austrian actress
- Ott, Anton (1912–2001), German politician (CSU), Member of the Bundestag
- Ott, Arnold (1840–1910), Swiss doctor and poet
- Ott, Barbara (* 1983), German film director
- Ott, Bernd (* 1949), German technology educator
- Ott, Bernhard (* 1952), Swiss, Protestant theologian and missiologist
- Ott, Carlos (* 1946), Canadian architect
- Ott, Christian David (* 1977), German physicist
- Ott, Christine (* 1963), French musician and composer
- Ott, Christine (* 1972), German-Italian literary scholar and university lecturer
- Ott, Christoph (1612–1684), German Jesuit and author
- Ott, Christoph (* 1959), German film producer and film distributor
- Ott, Claudia (* 1968), German Arabist, author, translator and musician
- Ott, Claus (* 1937), German lawyer
- Ott, Daniel (* 1960), Swiss composer
- Ott, Edgar (1929–1994), German actor and voice actor
- Ott, Edward (* 1941), American physicist
- Ott, Elfriede (1925–2019), Austrian chamber actress, singer and director
- Ott, Emma (1907–2011), Swiss nurse
- Ott, Erhard (* 1953), German trade unionist
- Ott, Erich (* 1944), German sculptor, medalist and graphic artist
- Ott, Erwin (1892–1947), Moravian teacher and writer
- Ott, Eugen (1889–1977), German diplomat and officer
- Ott, Eugen (1890–1966), German officer, most recently general of the infantry in World War II
- Ott, Franz (1910–1998), German politician (DP), Member of the Bundestag
- Ott, Friederike (* 1983), German theater and film actress
- Ott, Gautier (* 2002), French football player
- Ott, Georg (1811–1885), Catholic theologian and writer
- Ott, Gerhard (1929–2001), German surgeon and professor
- Ott, Gottlieb (1832–1882), Swiss building contractor and politician
- Ott, Hans († 1546), German bookseller, publisher and editor
- Ott, Hans Helge (* 1951), German radio play director, author and speaker
- Ott, Harry (1933–2005), German diplomat, ambassador of the GDR, GDR representative at the United Nations and deputy foreign minister
- Ott, Heinrich (1893–1975), Austrian politician (CSP, ÖVP), member of the National Council, member of the Federal Council
- Ott, Heinrich (1929–2013), Swiss Protestant Reformed theologian, pastor, professor of systematic theology and politician (SP)
- Ott, Herbert (1928–1972), German LDPD functionary, MdV
- Ott, Hermann (1870–1934), German politician (center), MdR
- Ott, Hermann (1895–1977), German governor and senior district director
- Ott, Hermann E. (* 1961), German environmental scientist and politician (Bündnis 90 / Die Grünen), Member of the Bundestag
- Ott, Horace (* 1933), American pianist, arranger, music producer, composer and orchestra leader
- Ott, Howard F. (1914–2005), American technician, engineer, and filmmaker
- Ott, Hugo (* 1931), German economic historian, Heidegger biographer
- Ott, Inge (* 1922), German author
- Ott, Jochen (* 1974), German politician (SPD), MdL
- Ott, Johann Heinrich (1617–1682), Swiss Protestant clergyman and university professor
- Ott, Johann Nepomuk (1804–1870), German landscape painter
- Ott, Johannes (1919–1995), German film architect
- Ott, Jörg (* 1942), Austrian marine biologist
- Ott, Joseph (1852–1902), German industrialist and smelter from the Saarland
- Ott, Karin (* 1945), Swiss opera singer (coloratura soprano)
- Ott, Karl († 1923), German administrative officer
- Ott, Karl (1873–1952), German educator and politician
- Ott, Karl (1891–1977), German lawyer, civil servant and politician (GB / BHE), Member of the State Parliament
- Ott, Karl August (1921–1991), German Romanist
- Ott, Karl-Heinz (* 1957), German writer, essayist and translator
- Ott, Kerstin (* 1982), German singer, songwriter, guitarist and DJ
- Ott, Klaus (* 1959), German journalist
- Ott, Klaus-Dieter (* 1952), German boxer (feather and lightweight)
- Ott, Konrad (* 1959), German philosopher and environmental and bioethicist
- Ott, Kurt (1912–2001), Swiss racing cyclist
- Ott, Liis (* 1990), Estonian national soccer player
- Ott, Ludwig (1906–1985), German Catholic theologian and Medievalist
- Ott, Lukas (* 1966), Swiss politician (Greens) and sociologist
- Ott, Manuel (* 1992), German-Filipino soccer player
- Ott, Martha (1923–2007), German entrepreneur
- Ott, Martin , German historian
- Ott, Max (1855–1941), Mayor of the City of Salzburg
- Ott, Mel (1909-1958), American baseball player
- Ott, Michael (* 1964), German literary scholar and politician (SPD)
- Ott, Michael (* 1982), Swiss marathon runner
- Ott, Michaela (* 1955), German philosopher, film and cultural scientist
- Ott, Mike (* 1995), Filipino soccer player
- Ott, Mirjam (* 1972), Swiss curler
- Ott, Mona Asuka (* 1991), German pianist
- Ott, Nathan (* 1989), German jazz musician (drums, composition)
- Ott, Nicolaus (* 1947), German graphic designer
- Ott, Niko (* 1945), German rower
- Ott, Patricia (* 1960), German hockey player
- Ott, Patrick (* 1967), German politician (CSU, FDP), MdL
- Ott, Paul (1903–1991), German organ builder
- Ott, Paul (* 1955), Swiss writer and editor
- Ott, Peter (* 1966), German filmmaker and film producer
- Ott, Philipp (* 1985), German opera singer (tenor)
- Ott, Rainer KG (1945–1995), German journalist, author and director
- Ott, Ramin (* 1986), American-Samoan soccer player
- Ott, Richard (1908–1974), German reform pedagogue, art teacher and painter
- Ott, Richard (1928–2008), German religious priest and teacher
- Ott, Rudolf (1900–1970), Swiss village butcher in Turbenthal and politician
- Ott, Sabrina (* 1997), Swiss floorball player
- Ott, Sascha (* 1965), German lawyer and politician (CDU)
- Ott, Selina (* 1998), Austrian trumpeter
- Ott, Simone Rosa (* 1970), German actress
- Ott, Stanley Joseph (1927–1992), American clergyman, Roman Catholic bishop of Baton Rouge
- Ott, Steve (* 1982), Canadian ice hockey player
- Ott, Théodore (1909–1991), Swiss brain researcher
- Ott, Thomas (* 1966), German geographer
- Ott, Thomas (* 1966), Swiss comic artist
- Ott, Thorsten (* 1973), German soccer player
- Ott, Ulrich (* 1939), German librarian
- Ott, Ulrich (* 1963), German Brigadier General, Commander of the International Helicopter Training Center and General of the Army Aviation Force
- Ott, Ulrich (* 1965), German psychologist and meditation researcher
- Ott, Victor Rudolf (1914–1986), German-Swiss rheumatologist
- Ott, Walter (1904–1960), German politician (FDP / DVP), MdL
- Ott, Walter (1928–2014), German homeland researcher
- Ott, Werner (* 1940), German environmental officer, former president of the Hessian State Agency for the Environment
- Ott, Wilhelm (1886–1969), German politician
- Ott, Wilhelm (* 1938), German Roman Catholic theologian
- Ott, Wilhelm (* 1947), German homeland researcher
- Ott, Wolfgang (1923–2013), German author
- Ott, Wolfgang (* 1957), Austrian sex offender and murderer
- Ott, Yvonne (* 1963), German lawyer and judge at the Federal Court of Justice
- Ottar , Norwegian navigator and trader
- Ottar Birting († 1146), Norwegian feudal man
- Óttar M. Norðfjörð (* 1980), Icelandic writer
- Óttarr Proppé (* 1968), Icelandic politician (Björt framtíð), musician and actor
- Óttarr svarti , Norwegian skald and faithful to Olav the Saint
- Ottarsdóttir, Katrin (* 1957), Faroese filmmaker
- Ottathengil, Geevarghese Divannasios (1950–2018), Indian clergyman, Syro-Malankar bishop of Puthur
- Ottaviani, Alfredo (1890–1979), Italian cardinal curia of the Roman Catholic Church
- Ottaviani, Giuseppe (* 1978), Italian DJ and music producer
- Ottaviano di Paoli († 1206), Italian cardinal of the Roman Church
- Ottaviano, Fulvio (* 1957), Italian screenwriter and film director
- Ottaviano, Roberto (* 1957), Italian jazz saxophonist
- Ottaviucci, Fabrizio , Italian pianist
- Ottawa, Clemens (* 1981), Austrian author and musician
- Ottawa, Theodor (1909–1972), Austrian journalist and writer
- Ottaway, Cuthbert (1850-1878), English football player
- Ottbert, Otto (1852–1933), German theater actor and director
- Otte, Bernhard (1883–1933), German trade union leader and politician (center), MdL
- Otte, Carlo (1908–1980), German economic functionary and NSDAP regional economic advisor
- Otte, Carsten (* 1972), German writer and radio host
- Otte, Christian (1674–1747), wholesale merchant
- Otte, Friedrich Wilhelm (1715–1766), Eckernförder merchant, shipowner, entrepreneur, politician and diplomat
- Otte, Friedrich Wilhelm (1795–1861), German painter
- Otte, Friedrich Wilhelm the Younger (1763–1850), German-Danish civil servant and writer
- Otte, Gerhard (* 1935), German lawyer, author, professor
- Otte, Hans (1926–2007), German musician
- Otte, Hans (* 1950), German theologian, author and editor, director of the regional church archive in Hanover
- Otte, Hans-Heinrich (1926–2020), German economist and auditor
- Otte, Heinrich (1808–1890), German Protestant clergyman and "art archaeologist"
- Otte, Heinrich (1891–1975), German politician (CDU), MdL
- Otte, Henning (* 1968), German politician (CDU), Member of the Bundestag
- Otte, Hermann (1842–1924), bank director and member of the citizenry
- Otte, Johann Nikolaus (1714–1780), German landowner, faience manufacturer and administrative officer
- Otte, Josef (1931–2012), German miner and local politician
- Otte, Karsten (* 1959), German lawyer, university professor and director at the Federal Network Agency
- Otte, Katharina (* 1987), German hockey player
- Otte, Klaus (1935–2020), German Protestant theologian
- Otte, Klaus (* 1942), German soccer player
- Otte, Lisa Maria (* 1982), German politician (Bündnis 90 / Die Grünen), MdHB
- Otte, Lutz (* 1959), German software developer and book author
- Otte, Manfred (1941–1989), German violinist and conductor
- Otte, Marcel (* 1948), Belgian prehistorian and professor of prehistory
- Otte, Max (* 1964), German-American economist
- Otte, Oscar (* 1993), German tennis player
- Otte, Rini (1917–1991), Dutch actress, draftsman, illustrator and sculptor
- Otte, Stefanie (* 1967), German judge, administrative lawyer and ministerial official
- Otte, Waldemar (1879–1940), German theologian and politician (center), MdR, MdL
- Otte-Kinast, Barbara (* 1964), German farmer and politician (CDU)
- Otteh, Emmanuel (1927–2012), Nigerian clergyman, Roman Catholic bishop of Issele-Uku
- Otten, Alwin (* 1963), German rower
- Otten, Bennata (1882–1955), librarian
- Otten, Casper , German sailor
- Otten, Dieter (* 1943), German sociologist
- Otten, Dirk (* 1968), German soccer player
- Otten, Else (1873–1931), Dutch literary translator
- Otten, Ernst-Wilhelm (1934–2019), German physicist
- Otten, Georg Dietrich (1806–1890), German composer and conductor
- Otten, Gerold (* 1955), German politician (AfD), Member of the Bundestag
- Otten, Giseltraud (* 1943), German lawyer
- Otten, Hans (1905–1942), German musician and composer
- Otten, Heinrich (1913–2012), German Hittiteologist
- Otten, Heinz (* 1919), German soccer player
- Otten, Heinz (* 1953), German soccer player and coach
- Otten, Jacqueline (* 1959), Dutch designer, trend researcher and professor
- Otten, Jonny (* 1961), German soccer player
- Otten, Karl (1889–1963), German pacifist and writer
- Otten, Kurt (1926-2016), German Anglicist
- Otten, Louis (1883–1946), Dutch football player and medic
- Otten, Max (1877–1962), German doctor, pioneer of occupational medicine
- Otten, Sven (* 1988), German dancer, web video producer and IT technician
- Otten, Thomas (* 1966), German archaeologist and monument conservator
- Ottenbacher, Otto (1888–1975), German lieutenant general in World War II
- Ottenbacher, Sonja (* 1960), Austrian politician (ÖVP), member of the state parliament in Salzburg
- Ottenberg, Hans-Günter (* 1947), German musicologist and university professor
- Ottenberg, Reuben (1882-1959), American hematologist
- Ottenbrite, Anne (* 1966), Canadian swimmer
- Ottenbros, Harm (* 1943), Dutch cyclist
- Ottenbruch, Peter (* 1957), German mechanical engineer and manager
- Ottendorfer, Anna (1815–1884), German-American publisher and philanthropist
- Ottendorfer, Günther (* 1968), Austrian manager of the CTO Telekom Austria Group
- Ottendorfer, Valentin Oswald (1826–1900), American journalist and patron
- Ottenfeld, Rudolf Otto von (1856–1913), German battle and oriental painter
- Ottenheimer, Albert (1886–1985), German businessman, entrepreneur, art collector and patron
- Ottenheimer, Hilde (1896–1942), German sociologist
- Ottenheimer, Paul (1873–1951), German conductor, composer and survivor of the Holocaust
- Otteni, Stefan (* 1966), German theater director and actor
- Ottenjann, Heinrich (1886–1961), German high school teacher and founder of the Museumsdorf Cloppenburg
- Ottenjann, Helmut (1931–2010), German folklorist and prehistoric archaeologist
- Ottens, Berthold (* 1942), German mineral collector, trader and mineralogist
- Ottens, Carl (1868–1937), German manager of the textile industry
- Ottens, Hans-Heinrich (1924-2001), German politician (CDU), MdL
- Ottens, Klaus (* 1966), German soccer player
- Ottens, Lena (* 1997), German volleyball and beach volleyball player
- Ottens, Lou (* 1926), Dutch engineer and inventor
- Ottens, Otto Hermann (1825–1895), German farmer and parliamentarian
- Ottensamer, Andreas (* 1989), Austrian musician
- Ottensamer, Daniel (* 1986), Austrian clarinetist
- Ottensamer, Ernst (1955-2017), Austrian clarinetist
- Ottenschläger, Andreas (* 1975), Austrian politician (ÖVP), member of the National Council
- Ottenstein, Berta (1891–1956), German dermatologist
- Ottenthal, Elmar (* 1951), Austrian director and theater director
- Ottenthal, Emil von (1855–1931), Austrian historian
- Ottenwalter, Emil (1901–1956), Austrian actor
- Ottenweller, Albert Henry (1916–2012), American clergyman, Roman Catholic Bishop of Steubenville
- Otter, Anne Sofie von (* 1955), Swedish opera singer (mezzo-soprano)
- Otter, Butch (* 1942), American politician
- Otter, Casten von (* 1941), Swedish social scientist
- Otter, Christian (1598–1660), Prussian mathematician, traveler and fortress builder
- Otter, David (* 1991), Austrian soccer player
- Otter, Fredrik von (1833–1910), Swedish admiral and politician, member of the Riksdag and Prime Minister
- Otter, Göran von (1907–1988), Swedish diplomat
- Otter, Jakob (1485–1547), Reformed theologian and reformer of Esslingen
- Otter, Jiří (1919–2018), Czech Evangelical Church Councilor
- Otter, Johan (1707–1749), Swedish-French orientalist and explorer
- Otter, Karl (1883–1945), German trade unionist and politician (USPD, SPD), MdL
- Otter, Lothar (1931–2016), German SPD functionary and persecuted in the GDR
- Otter, Ned , American jazz musician
- Otter, Thomas (* 1971), Austrian business economist
- Otterbach, Andreas (* 1965), German business economist and university professor
- Otterbach, Axel F. (* 1948), German sculptor
- Otterbach, Carolin (* 1963), German director
- Otterbach, Christine (* 1973), German wheelchair tennis player
- Otterbach, Ernst (* 1920), German soccer player
- Otterbach, Otto , German soccer player
- Otterbein, Philipp Wilhelm (1726–1813), German-American preacher and one of the founders of the Church of the United Brothers in Christ
- Otterbu, Kirsten Melkevik (* 1970), Norwegian athlete
- Otterloo, Rogier van (1941–1988), Dutch jazz musician
- Otterloo, Rutger van (* 1959), Dutch saxophonist (jazz, improvisation music)
- Otterloo, Willem van (1907–1978), Dutch conductor, cellist and composer
- Ottermann, Nicolas (* 1986), German pool player
- Otterness, Tom (* 1952), American sculptor
- Otterpohl, Bernhard (1881–1963), French-German painter and restorer
- Otterpohl, Günter (* 1932), German politician (CDU), MdL
- Otterpohl, Ralf (* 1958), German engineer, urban water manager
- Otters, Friedhelm (* 1948), German soccer player
- Ottersbach, Herbert (1930–2016), German civil servant
- Ottersbach, Heribert C. (* 1960), German painter
- Ottersbach, Karl-Heinz (* 1912), German public prosecutor at the special court
- Ottersen, Ole Petter (* 1955), Norwegian neuroscientist, Rector of the University of Oslo
- Otterson, Antje (* 1979), German actress, Hamburg film and theater actress
- Otterson, Heinz (1928–1979), German painter, draftsman, sculptor and filmmaker
- Otterson, Jack (1905–1991), American art director
- Otterspeer, Hein (* 1988), Dutch speed skater
- Otterstedt, Annette (* 1951), German musicologist and viol player
- Otterstedt, Eberhard von (1881–1968), German landscape painter, portraitist, draftsman and children's book illustrator
- Otterstrom, Thorvald (1868–1942), American composer
- Ottervik, Rita (* 1966), Norwegian politician (Ap), Mayor of Trondheim
- Ottesdotter, Ingerd († 1555), Norwegian landowner and fiefdom
- Ottesen, Camilla (* 1972), Danish television presenter
- Ottesen, Jeanette (* 1987), Danish swimmer
- Ottesen, Lasse (* 1974), Norwegian ski jumper and ski jumping trainer
- Ottesen-Jensen, Elise (1886–1973), Norwegian-Swedish sex educator, social reformer, journalist and anarchist activist
- Ottey, Merlene (* 1960), Slovenian sprinter of Jamaican origin
- Ottey, Milton (* 1959), Canadian high jumper of Jamaican origin
- Otth, Carl Adolf (1803–1839), Swiss doctor and natural scientist
- Otth, Jean (1940–2013), Swiss video artist
- Otth, Johann Heinrich (1651–1719), Swiss pastor and Hebrew / orientalist
- Ottheinrich (1502–1559), Count Palatinate of Pfalz-Neuburg, Elector of the Palatinate
- Otti, Vincent , Ugandan rebel leader
- Ottiano, Rafaela (1888–1942), American actress
- Ottieri, Francesco Maria (1665–1742), Italian historian
- Ottiker, Marc (* 1967), Swiss film and theater director
- Ottilia Schenk von Siemau († 1529), abbess
- Ottiliae, Christian (1775–1851), Prussian mountain and hut clerk
- Ottiliae, Hermann (1821–1904), Prussian mining captain
- Ottillinger, Margarethe (1919–1992), Austrian civil servant and manager, victim of Stalinism
- Ottin, Auguste (1811–1890), French sculptor
- Otting, Fünfstetten and Schönfeld, Karl Friedrich Stephan von (1767–1834), Bavarian nobleman, half-brother of King Maximilian I of Bavaria
- Öttingen, Franz Wilhelm von (1725–1798), provost in Cologne and canon in Münster
- Ottinger, Albert (1878–1938), American lawyer and politician
- Ottinger, Franz von (1793–1869), Austrian general of the cavalry
- Öttinger, Konrad († 1540), Lutheran theologian and reformer
- Ottinger, Richard (* 1929), American politician
- Ottinger, Ulrike (* 1942), German filmmaker
- Ottitsch, Oliver (* 1983), Austrian cartoonist
- Ottjörg, AC (* 1958), German artist
- Ottke, Annegret (* 1947), German politician (SPD), MdHB and MdB
- Ottke, Sven (* 1967), German boxer
- Ottkowitz, Jörg (* 1966), German American football player
- Ottl, Andreas (* 1985), German soccer player
- Ottl, Dionys (* 1964), German architect
- Öttl, Eliland (1653–1707), Abbot of Benediktbeuern
- Öttl, Karl (1902–1988), Austrian politician
- Öttl, Martin (* 1969), Austrian musician
- Öttl, Matthias (* 1992), German soccer player
- Öttl, Michael (* 1968), Austrian musician
- Öttl, Peter (* 1965), German motorcycle racer
- Öttl, Philipp (* 1996), German motorcycle racer
- Ottler, Otto (1891–1965), German commercial artist and painter
- Ottley, David (born 1955), British javelin thrower
- Ottlik, Géza (1912–1990), Hungarian writer and translator
- Ottlik, György (1889–1966), Hungarian diplomat and journalist
- Ottlinger, Friedhelm (1930–2001), German politician (SPD), MdL
- Öttlinger, Johann Joseph (1662–1724), maintenance commissioner in Starnberg
- Ottlitz, Stefan (* 1976), German journalist
- Ottlyk, Rudolf (1920–2007), Austrian manager
- Ottman, Fred (born 1956), American wrestler
- Ottman, John (* 1964), American film composer, film editor and film director
- Ottmann, Anna (* 1954), German film actress and artist
- Ottmann, Anton (* 1945), German writer and journalist
- Ottmann, Henning (* 1944), German political scientist and philosopher, professor of philosophy and political science in Munich
- Ottmann, Ingeborg (1925–2010), German actress
- Ottmann, Isabelle (* 2002), young German actress
- Ottmann, Klaus (* 1954), German freelance curator and writer
- Ottmann, Marie , Austrian operetta singer (soprano)
- Ottmann, Peter (* 1951), German administrative lawyer, district administrator of the Viersen district
- Ottmann, Peter (* 1957), German architect
- Ottmar, Richard (1889–1956), German theologian, teacher and timetable expert
- Ottmar, Ulrich , German basketball player
- Ottmer, Carl Theodor (1800–1843), German architect and Brunswick construction clerk
- Ottmer, Julius (1846–1886), German mineralogist and geologist
- Ottmer, Rudolf (1902–1974), German physicist, crystallographer and high school teacher
- Ottner, Carmen , Austrian musicologist
- Otto , abbot of the Waldsassen monastery
- Otto († 1148), Bohemian clergyman and bishop of Prague
- Otto († 1196), Prince-Bishop of Eichstätt
- Otto († 1223), abbot in the monastery of St. Blasien
- Otto , Duke of Burgundy
- Otto , eldest son of Duke Karl of Lower Lorraine
- Otto († 1033), Duke of Poland (1033) from the Piast dynasty
- Otto († 1060), Count of Savoy
- Otto († 1123), Count von Ballenstedt, Count of Anhalt, Duke of Saxony
- Otto (1125–1190), Margrave of Meissen
- Otto († 1310), Count of Kleve (1305-1310)
- Otto (1292–1344), Duke of Braunschweig-Lüneburg and Göttingen
- Otto , Lord of Lippe-Lemgo (1344-1360)
- Otto (1301–1361), Archbishop of Magdeburg (1327–1361)
- Otto († 1399), Prince of Taranto
- Otto (1589–1657), Count of Lippe-Brake
- Otto (1815–1867), King of Greece
- Otto (1848–1916), King of Bavaria
- Otto de la Roche († 1234), Duke of Athens
- Otto the Elder von Bergow , Czech nobleman of German descent, highest burgrave
- Otto der Fröhliche (1301–1339), Duke of Austria, Styria and Carinthia
- Otto der Schütz († 1366), Landgrave of Hesse
- Otto Franz Joseph of Austria (1865–1906), Archduke of Austria, father of Emperor Karl I of Austria
- Otto Heinrich (1556–1604), Count Palatinate and Duke of Pfalz-Sulzbach
- Otto Heinrich von Braunschweig-Harburg (1555–1591), Hereditary Prince of Braunschweig-Lüneburg-Harburg
- Otto I († 1067), Count of Weimar-Orlamünde (1062-1067); Margrave of Meissen (1062-1067)
- Otto I († 1087), Moravian prince
- Otto I. , Count of Ravensberg
- Otto I († 1205), Count von Lebenau
- Otto I († 1214), elected bishop (Elekt) of Gurk
- Otto I († 1218), Bishop of Münster (1204–1218)
- Otto I. , Count of Nassau
- Otto I († 1305), Count of Waldeck (1273 / 1276–1305)
- Otto I († 1347), Count of Rietberg (1313–1347)
- Otto I. († 1348), German clergyman, Archbishop of the Archdiocese of Bremen (1344-1348)
- Otto I († 1386), Margrave of Baden-Hachberg (1369–1386)
- Otto I († 1404), son of Adolf VII von Holstein-Pinneberg
- Otto I († 912), Duke of Saxony
- Otto I (912–973), Duke of the Saxons, King of Eastern Franconia (from 936) and Emperor of the Holy Roman Empire
- Otto I († 1004), Duke of Carinthia (978–983 and 995–1002)
- Otto I (954–982), Duke of Byern and Swabia
- Otto I († 1183), Duke of Bavaria
- Otto I († 1184), Margrave of Brandenburg
- Otto I. , Count of Bentheim
- Otto I. , Count of Geldern and Zutphen (1182–1207)
- Otto I († 1200), Count Palatine of Burgundy
- Otto I († 1263), Count of Tecklenburg (1202–1263)
- Otto I (1204–1252), first Duke of Braunschweig and Lüneburg
- Otto I. , abbot in Bremen and in Rastede
- Otto I († 1251), Count of Oldenburg
- Otto I († 1304), Prince of Anhalt-Aschersleben
- Otto I († 1328), Landgrave of Hesse
- Otto I , Duke of Pomerania-Stettin
- Otto I (1302–1384), Margrave of Hachberg-Sausenberg
- Otto I († 1394), Duke of Braunschweig-Lüneburg
- Otto I (1390–1461), Count Palatine and Duke of Palatinate-Mosbach-Neumarkt
- Otto I (1495–1549), Duke of Braunschweig-Lüneburg, Prince of Lüneburg (1520–27), owner of the lordship of Harburg (1527–1549)
- Otto I of Braunschweig-Lüneburg († 1279), Bishop of Hildesheim (1260–1279)
- Otto I. von Brehna († 1203), Count of Brehna (1182–1203)
- Otto I. von Dachau-Valley , Count of Scheyern-Dachau-Valley
- Otto I von Geldern († 1215), Bishop of Utrecht
- Otto I of Lobdeburg († 1223), Bishop of Würzburg
- Otto I. von Salm († 1150), German count
- Otto I. von Scheyern († 1073), Count of Scheyern and Vogt of Freising
- Otto II († 1047), Count Palatine of Lorraine, Duke of Swabia
- Otto II († 1111), Count of Habsburg
- Otto II. († 1244), Count of Ravensberg
- Otto II. , Count of Tecklenburg and Bentheim
- Otto II. († 1389), Count of Rietberg (1365-1389)
- Otto II. († 1418), Margrave of Baden-Hachberg (1410–1415)
- Otto II. (955–983), Holy Roman Emperor (973–983)
- Otto II († 1126), Duke of Olomouc and Brno
- Otto II. († 1205), Margrave of Brandenburg from the Ascanian family
- Otto II , city ministerial, castle captain, chief district judge, governor
- Otto II (1206–1253), Duke of Bavaria
- Otto II. († 1271), Count of Geldern
- Otto II. († 1304), Count of Oldenburg and Delmenhorst
- Otto II , Prince of Anhalt-Aschersleben
- Otto II. († 1330), Duke of Braunschweig-Lüneburg in the Principality of Lüneburg (1277-1330)
- Otto II (1271–1324), ruling Count of Hoya (1313–1324)
- Otto II , first count of Nassau-Dillenburg
- Otto II. († 1369), Count of Waldeck (1344-1369)
- Otto II. († 1406), Archbishop of Bremen
- Otto II († 1428), Duke of Pomerania-Stettin
- Otto II († 1463), Duke of Braunschweig-Lüneburg
- Otto II. (1400–1464), Count of Holstein-Pinneberg and Schauenburg (1426–1464)
- Otto II (1435–1499), Duke and Count Palatine of Mosbach-Neumarkt
- Otto II (1528–1603), Duke of Braunschweig-Harburg (1549–1603)
- Otto II. (1799–1872), German politician, President of the Grand Duchy of Hesse state parliament
- Otto II von Berg († 1220), Bishop of Freising (1184–1220)
- Otto II of Constance († 1174), Bishop of Constance
- Otto II von Lippe († 1259), 28th Bishop of Münster (1247–1259); Founder of the Lower Monastery of Münster
- Otto II. Von Scheyern († 1120), Count von Scheyern, monastery founder and guardian of the monastery
- Otto II of Utrecht († 1227), Bishop of Utrecht
- Otto II von Warburg († 1288), abbot of the monasteries Werden and Helmstedt
- Otto II. Von Woldenberg († 1331), Bishop of Hildesheim (1319–1331)
- Otto II von Wolfskeel († 1345), Prince-Bishop of Würzburg (1333-1345)
- Otto II of Zutphen († 1113), Count of Zutphen and Vogt von Corvey
- Otto III. († 1374), Count of Oldenburg and Delmenhorst
- Otto III. († 1428), ruling Count of Hoya (Lower County) (1383–1428)
- Otto III. († 1535), Count of Rietberg (1516–1535)
- Otto III. , Roman-German king and emperor
- Otto III. († 1057), Duke of Swabia
- Otto III. (1122–1160), Duke of Olomouc
- Otto III. (1215–1267), Margrave of the Mark Brandenburg
- Otto III. (1244–1285), count from the Weimar-Orlamünde family
- Otto III. († 1305), Count of Ravensberg
- Otto III. (1261–1312), Duke of Lower Bavaria, King of Hungary
- Otto III. († 1310), Count of Gorizia and Tyrol and Duke of Carinthia
- Otto III. († 1352), Prince of Lüneburg
- Otto III. , Count of Waldeck zu Landau (1431–1459)
- Otto III. (1426–1510), Count of Holstein-Schauenburg
- Otto III. (1444–1464), Duke of Pomerania-Stettin
- Otto III. (1572–1641), Duke of Braunschweig-Harburg
- Otto III. (1860–1904), German nobleman and politician, MdL
- Otto III. von Hachberg (1388–1451), Bishop of Constance
- Otto III. of Holland († 1249), Bishop of Utrecht
- Otto III. von Rietberg († 1308), Bishop of Münster (1301–1306)
- Otto IV. († 1307), Count of Tecklenburg-Ibbenbüren (1285–1307)
- Otto IV. († 1446), Prince of Lüneburg
- Otto IV. , Count of Rietberg (1535–1552)
- Otto IV. († 1218), Holy Roman Emperor
- Otto IV († 1303), Count Palatine of Burgundy
- Otto IV. , Margrave of Brandenburg (1266–1308 / 1309)
- Otto IV. († 1328), Count of Ravensberg
- Otto IV. , Count from the Weimar-Orlamünde family
- Otto IV. (1307–1334), Duke of Lower Bavaria (1310–1334)
- Otto IV. (1367–1418), Count of Oldenburg and Delmenhorst
- Otto IV. (1448–1495), Count of Waldeck zu Landau (1459–1495)
- Otto IV. (1517–1576), Count of Holstein-Pinneberg
- Otto IV von Hoya († 1424), Bishop of Munster (1392–1424); Administrator of Osnabrück (1410–1424)
- Otto IV. Von Maissau († 1440), Austrian Hereditary Marshal, Erbschenk and Schenk
- Otto IV von Rietberg († 1406), Bishop of Minden
- Otto IV von Sonnenberg († 1491), Bishop of Constance
- Otto Tanner , provost of the Berchtesgaden monastery (1351–1355)
- Otto V. († 1298), margrave and co-regent in Brandenburg
- Otto V (1346–1379), Elector of Brandenburg
- Otto V († 1471), Prince of Lüneburg (1464–1471)
- Otto V. (1614–1640), last descendant of the house of Schauenburg
- Otto V. von Scheyern († 1156), Count Palatine in Bavaria
- Otto VI. († 1388), Count of Tecklenburg and by marriage Mr. von Rheda
- Otto VI. (1297–1340), count from the Weimar-Orlamünde family
- Otto VI. von Andechs († 1196), bishop of Bamberg and Brixen
- Otto VII. († 1189), Count Palatine in Bavaria
- Otto VII. († 1234), Duke of Merania, Count Palatine of Burgundy and Margrave of Istria
- Otto VII. , Count of Tecklenburg
- Otto VIII († 1248), Duke of Merania and Count Palatine of Burgundy
- Otto VIII. (1530–1582), Count of Hoya
- Otto VIII von Wittelsbach († 1209), Count Palatine of Bavaria
- Otto von Ahaus-Ottenstein , Ministeriale, Droste, Burgmann, Lord of the Castle and Gograf
- Otto von Bamberg († 1139), Bishop of Bamberg, saint
- Otto von Barmstede , Holstein nobleman
- Otto von Botenlauben , Middle High German minstrel; Crusaders; Monastery founder
- Otto von Bubenberg (1360–1397), mayor of the city of Bern
- Otto von Cappenberg († 1171), provost of the Cappenberg monastery and godfather of Emperor Friedrich I Barbarossa
- Otto von der Mark († 1262), provost in Aachen and Maastricht (until 1249); Count of Altena (1249–1262)
- Otto von Diemeringen († 1398), Alsatian canon and translator
- Otto von Freising († 1158), Bishop of Freising; Historian
- Otto von Hadmersleben , nobleman
- Otto von Hammerstein , Count of Wetterau, Engersgau, Niederlahngau, Gleiberg
- Otto von Henneberg († 1200), Bishop of Speyer (1190–1200)
- Otto von Hessen-Kassel (1594–1617), Hereditary Prince of Hessen-Kassel, administrator of Hersfeld
- Otto von Kerpen († 1209), Grand Master of the Teutonic Order
- Otto von Linn , German crusader and founder of Linn Castle
- Otto von Lohn , Canon in various dioceses and Count von Lohn
- Otto von Lonsdorf , Bishop of Passau
- Otto von Machland (1100–1149), nobleman
- Otto von Mehringen († 1261), Roman Catholic Bishop and Bishop of Brandenburg (1251–1261)
- Otto von Minden , Bishop of Minden
- Otto von Northeim († 1083), Duke of Bavaria (1061-1070)
- Otto von Passau , Franciscan in Basel and author of the edification pamphlet "The twenty-four olds"
- Otto von Riedenburg († 1089), Bishop of Regensburg
- Otto von Rietberg († 1307), Bishop of Paderborn
- Otto von Schalksberg († 1398), German Roman Catholic bishop
- Otto von St. Blasien , Benedictine monk and chronicler
- Otto of Strasbourg († 1100), Bishop of Strasbourg
- Otto von Tübingen († 1284), Count Palatine of Tübingen
- Otto von Verdun († 944), Count of Verdun and (from 942) Duke of Lorraine
- Otto von Weimar-Orlamünde , son of Count Hermann II and Princess Beatrix of Andechs-Meranien
- Otto von Wettin († 1368), German Roman Catholic bishop
- Otto Wilhelm († 1026), ruler of Burgundy
- Otto X. († 1403), Count
- Otto, Adelheid (* 1966), German archaeologist
- Otto, Adolf (1827–1898), German judge and lawyer
- Otto, Adolf (1872–1943), German social reformer
- Otto, Adolph Wilhelm (1786–1845), German anatomist and university professor
- Otto, Albert von (1836–1922), German civil servant and politician
- Otto, Alex (1861–1936), German actor
- Otto, Alexander (* 1924), Austrian diplomat
- Otto, Alexander (* 1967), German manager and patron, CEO of ECE
- Otto, Alexander (* 1988), German soccer player
- Otto, Alina (* 1995), German handball player
- Otto, Amöne (1774–1837), German writer
- Otto, Andreas , German economist and university professor
- Otto, Andreas (1936–2018), German physicist
- Otto, Andreas (* 1962), German politician (Bündnis 90 / Die Grünen), MdA
- Otto, Andreas (* 1963), German boxer
- Otto, Angelina (* 2000), German inline speed skater
- Otto, Ann-Kathrin (* 1968), German illustrator, production designer, theater painter, presenter, singer and photo model
- Otto, Anna Kerstin (* 1972), German visual artist
- Otto, Anton , German Lutheran theologian and pastor
- Otto, Anton (1852–1930), German theater actor, director, director and translator
- Otto, August († 1884), Austrian businessman
- Otto, Barry (born 1941), Australian actor
- Otto, Benjamin (* 1975), German entrepreneur
- Otto, Bernd (* 1940), German manager
- Otto, Bernd K. (* 1947), German jazz musician and author
- Otto, Bernhard Christian (1745–1835), German physician, naturalist and economist
- Otto, Berthold (1859–1933), German reform pedagogue
- Otto, Björn (* 1977), German pole vaulter
- Otto, Boris (* 1971), German industrial engineer and university professor
- Otto, Brinna (* 1938), German classical archaeologist
- Otto, Carl (1844–1898), German entrepreneur
- Otto, Carl August Gottlob (1896–1968), German writer and editor
- Otto, Carl Christian (1817–1873), Danish-German mnemonic technician and communist journalist
- Otto, Carl Wunibald (* 1808), German chemist, member of the Association of Communists
- Otto, Carlos (1838–1897), German chemist and entrepreneur
- Otto, Carsten (* 1986), German voice actor and radio play speaker
- Otto, Christian (1948–2006), German politician (PDS), member of the state parliament in Brandenburg
- Otto, Christian (* 1949), German politician (CDU)
- Otto, Christian Friedrich von (1758–1836), German politician
- Otto, Christian Traugott (1791–1874), German Lutheran theologian and educator
- Otto, Christoph Friedrich (1783–1856), German gardener and botanist
- Otto, David (* 1999), German soccer player
- Otto, Dietmar (* 1955), German soccer player
- Otto, Dominicus (1716–1773), German Benedictine abbot
- Otto, Eberhard (1913–1974), German Egyptologist
- Otto, Eberhard (* 1948), German entrepreneur and politician (FDP), Member of the Bundestag
- Otto, Eckart (* 1944), Protestant theologian and university professor
- Otto, Edouard Carl Friedrich (1841–1905), German-English inventor
- Otto, Eduard (1812–1885), German gardener, botanist and editor of a newspaper
- Otto, Egbert (1905–1968), German politician (NSDAP, Association of Expellees), MdR
- Otto, Ekkehard (1928–2012), German chamber singer
- Otto, Elizabeth (* 1970), American art historian, university lecturer and non-fiction author
- Otto, Emil (1813–1878), German Protestant theologian, author and lecturer at Heidelberg University
- Otto, Emil (1903–1974), German politician (SED), MdV, trade unionist
- Otto, Émile , Belgian cyclist
- Otto, Erich (1883–1975), German trade union official and actor
- Otto, Ernst (1877–1959), German educator and linguist
- Otto, Ernst (1891–1941), German Lutheran theologian
- Otto, Everard (1685–1756), German lawyer
- Otto, Felix (* 1966), German mathematician
- Otto, Felix (* 1983), German rowing world champion
- Otto, Frank (* 1957), German media entrepreneur
- Otto, Frank (* 1958), German water polo player
- Otto, Frank (* 1967), German historian
- Otto, Fred (1883–1944), German architect and city planner
- Otto, Frei (1925–2015), German architect, architectural theorist and university professor
- Otto, Frieda (1911–1985), German librarian
- Otto, Friederike (* 1982), German climatologist
- Otto, Friedrich (1826–1902), German historian
- Otto, Friedrich (* 1952), German computer scientist
- Otto, Friedrich Julius (1809–1870), chemist, pharmacist and university professor
- Otto, Friedrich Wilhelm (1805–1866), German classical philologist
- Otto, Friedrich Wilhelm , German LDPD functionary, MdL Mecklenburg
- Otto, Fritz (1902–1983), German KPD functionary, functionary of the National Council of the National Front
- Otto, Fritz Joachim (1916–1993), German cameraman and entrepreneur
- Otto, Georg (1868–1939), German graphic artist and heraldist
- Otto, Georg (* 1928), German politician (Die Grünen), co-founder of the party "Die Grünen"
- Otto, Georg Christian (1763–1828), German writer and statistician
- Otto, Gerald (* 1964), German politician (CDU), MdL
- Otto, Gerhard (1914–1992), German flautist
- Otto, Gert (1927–2005), German Protestant theologian
- Otto, Gertrud (1895–1970), German art historian
- Otto, Gianni (* 1995), German basketball player
- Otto, Gottlieb Friedrich (1751–1815), German teacher, pastor and lexicographer
- Otto, Götz (* 1967), German actor
- Otto, Gracie (* 1987), Australian actress, producer and director
- Otto, Grit (* 1990), German biathlete
- Otto, Gunter (1927–1999), German art teacher
- Otto, Gustav (1843–1917), Baltic doctor and historian
- Otto, Gustav (1883–1926), German aircraft manufacturer
- Otto, Hans (1895–1970), German administrative officer and politician (FDP), Member of the Bundestag
- Otto, Hans (1900–1933), German theater actor
- Otto, Hans (1922–1996), German organist, harpsichordist and cantor
- Otto, Hans C. (1879–1929), German glove manufacturer
- Otto, Hans-Joachim (1928–2011), German basketball official
- Otto, Hans-Joachim (1937–2020), German football player
- Otto, Hans-Joachim (* 1952), German politician (FDP), Member of the Bundestag, Member of the Bundestag
- Otto, Hans-Jürgen (1935–2017), German forest scientist and forest official
- Otto, Hans-Uwe (* 1940), German educator and university lecturer
- Otto, Hans-Werner (1908–1977), German lawyer, Nazi official and State Secretary
- Otto, Hansjörg (* 1938), German legal scholar
- Otto, Harro (* 1937), German criminal law scholar and university professor
- Otto, Heini (* 1954), Dutch soccer player
- Otto, Heino (* 1869), German architect
- Otto, Heinrich (1858–1923), German painter, draftsman, lithographer, wood cutter and etcher
- Otto, Heinrich (1892–1944), member of the Landtag of the People's State of Hesse
- Otto, Heinrich (1893–1983), German politician (KPD), district administrator of the Siegen district, Member of the State of North Rhine-Westphalia
- Otto, Heinz-Joachim (1933–2017), German politician (SPD), MdL
- Otto, Helga (* 1938), German politician (SPD), Member of the Bundestag
- Otto, Helmut (1892–1974), Lord Mayor of Solingen and Düsseldorf
- Otto, Helmut (* 1927), German historian
- Otto, Helmut (1937–2012), German painter and university professor
- Otto, Hendrik (* 1974), German cook
- Otto, Herbert (1925–2003), German writer
- Otto, Hermann (1863–1941), German writer, journalist, artist and mining entrepreneur
- Otto, Immanuel Friedrich (1791–1875), German textile industrialist
- Otto, Ingeborg (* 1927), German politician (SPD), member of the Berlin House of Representatives
- Otto, Iris Anna (* 1953), German writer
- Otto, Isabell (* 1976), German film and media scholar
- Otto, Jacob Christian Friedrich (1795–1869), Prussian major general and director of the powder factory in Spandau
- Otto, James (* 1973), American country singer and songwriter
- Otto, Jan (1841–1916), Czech publisher
- Otto, Jim (* 1938), American football player
- Otto, Joachim (* 1927), German football goalkeeper
- Otto, Joel (* 1961), American ice hockey player and coach
- Otto, Johann Georg (1744–1829), German administrative lawyer and civil servant
- Otto, Johann Thomas (1726–1790), German merchant and councilor of the Hanseatic city of Lübeck
- Otto, Johannes († 1545), German lawyer, clergyman and university professor
- Otto, Johannes († 1691), German high school director
- Otto, John (* 1977), American rock musician
- Otto, John E. (1938-2020), American government official
- Otto, Jonny (* 1994), Spanish soccer player
- Otto, Josef (1880–1961), German heavy athlete
- Otto, Joseph Albert (1901–1981), German Roman Catholic clergyman, theologian, Jesuit, missionary scholar, editor and narrator
- Otto, Julius (1804–1877), German male vocal composer, music teacher, choir director and Kreuzkantor
- Otto, Julius (1866–1924), German theater actor and director
- Otto, Julius Konrad , Hebraist and university professor in Altdorf and Edinburgh
- Otto, Justine (* 1974), German painter
- Otto, Justus (1802–1877), member of the state parliament of the Grand Duchy of Hesse
- Otto, Karl (1904–1975), German architect and university professor
- Otto, Karl (1910–1998), German pedagogue, inventor of a German vowel writing shorthand system
- Otto, Karl Anton Dominik von (1723–1797), Prussian major general, commandant of the Cosel Fortress
- Otto, Karl Eduard (1795–1869), German legal scholar and university professor
- Otto, Karl-Adolf (* 1934), sociologist
- Otto, Karl-Heinz (1915–1989), German prehistoric
- Otto, Kevin , American actor
- Otto, Kim (* 1968), German journalist and university professor
- Otto, Klaus (1939–1978), German jockey (GDR)
- Otto, Klaus-Stephan (* 1949), German psychologist and organizational developer
- Otto, Kristin (* 1966), German athlete and journalist
- Otto, Kurt (1887–1947), German politician (NSDAP)
- Otto, Kurt (1900–1942), German soccer player and coach
- Otto, Kurt (1903–1985), German politician (NPD)
- Otto, Kurt (1930–2003), German rally racing driver
- Otto, Leopold (1819–1882), Lutheran theologian and hymn poet
- Otto, Lisa (1919–2013), German opera singer (soprano)
- Otto, Lothar (1932–2019), German cartoonist and book illustrator
- Otto, Louise (1896–1975), German swimmer
- Otto, Lutz (1954–2010), German soccer player
- Otto, MAC (1918–2005), German philosopher
- Otto, Manfred (1927–2013), Baptist clergyman
- Otto, Manuel Alexander (* 1996), German game developer specializing in Flash games
- Otto, Maria (1892–1977), first female lawyer admitted to the German bar
- Otto, Markus (1600–1674), envoy of the imperial city of Strasbourg to the Westphalian Peace Congress in Münster
- Otto, Martin (* 1961), German mathematician and university professor
- Otto, Martin (* 1962), German wheelchair basketball trainer
- Otto, Mathilde (1875–1933), German politician and women's rights activist
- Otto, Maximilian (* 1991), German skeleton driver
- Otto, Michael (* 1938), German painter and graphic artist
- Otto, Michael (* 1943), German manager and patron, chairman of the supervisory board and former chairman of the Otto Group
- Otto, Michael T. (* 1969), German trumpeter and composer
- Otto, Miranda (* 1967), Australian actress
- Otto, Moritz (* 1988), German actor
- Otto, Nicolaus (1832–1891), co-inventor of the four-stroke principle
- Otto, Norbert (* 1943), German politician (CDU), Member of the Bundestag, Member of the Bundestag
- Otto, Norbert (* 1957), German soccer player
- Otto, Oliver (* 1972), German soccer player
- Otto, Ottomar (1892–1945), criminal counselor and, as SS-Sturmbannführer, head of the state police headquarters in Nuremberg
- Otto, Paul (1846–1893), German sculptor
- Otto, Paul (1878–1943), German actor
- Otto, Paul (1881–1961), German lieutenant general
- Otto, Paul (1903–1979), German politician (CDU), MdL
- Otto, Philipp (* 1973), German actor
- Otto, Philipp (* 1978), German consultant
- Otto, Ralf (* 1956), German choir director, conductor and university teacher
- Otto, Reinhard (* 1954), German politician (CDU), MdL
- Otto, Reinhold (1863–1930), German educator and liberal educational politician
- Otto, Reinhold (* 1932), German politician (SPD), MdL
- Otto, Richard (1872–1952), German medical officer and bacteriologist
- Otto, Robert (1837–1907), German chemist and pharmacist
- Otto, Rolf Georg (1924–2003), Swiss architect
- Otto, Rolf-Jürgen (1940–2016), German entrepreneur and former president of Dynamo Dresden
- Otto, Rudolf (1869–1937), German Protestant theologian and religious scholar
- Otto, Rudolf (1887–1962), German-Bohemian painter
- Otto, Rudolf von (1735–1811), Austrian general
- Otto, Sandra (* 1975), German badminton player
- Otto, Siegfried (1914–1997), German entrepreneur
- Otto, Siegmund († 1641), Dresden councilor and mayor
- Otto, Silvia (1931–2009), German basketball referee
- Otto, Stephan (1931–2010), German philosopher and university professor
- Otto, Sven-Joachim (* 1969), German lawyer and politician (CDU)
- Otto, Sylke (* 1969), German luge athlete
- Otto, Teo (1904–1968), German set designer
- Otto, Thomas (* 1958), German journalist and artist
- Otto, Thorsten (* 1964), German moderator
- Otto, Tim (* 1997), German handball player
- Otto, Valentin (1529–1594), German musician and Leipzig Thomaskantor
- Otto, Valentin (1795–1849), member of the state parliament, Grand Duchy of Hesse
- Otto, Venantia (* 1987), Namibian photo model
- Otto, Victor Alexander von (1852–1912), German lawyer and politician, Minister of Justice and Prime Minister in the Kingdom of Saxony
- Otto, Waldemar (1929–2020), German sculptor and artist
- Otto, Walter (1878–1941), German ancient historian
- Otto, Walter (1907–1998), German lawyer
- Otto, Walter (1911–1971), German art historian
- Otto, Walter F. (1874–1958), German classical philologist
- Otto, Wayne (* 1966), British karateka
- Otto, Werner (1909–2011), German entrepreneur
- Otto, Werner (* 1929), German soccer player
- Otto, Werner (* 1948), German racing cyclist
- Otto, Wilfriede (1933–2015), German historian and publicist
- Otto, Wilhelm (1825–1918), German theater actor
- Otto, Wilhelm (1871–1943), German sculptor
- Otto, Wilhelm (1898–1956), German politician (CDU), MdL
- Otto, Wolfgang (1911–1989), German SS-Stabsscharführer in Buchenwald concentration camp
- Otto, Wolfgang (* 1947), German officer, Lieutenant General of the Army of the Bundeswehr and Commander of the Army Command
- Otto, Yari (* 1999), German soccer player
- Otto-Alvsleben, Melitta (1842-1893), German opera singer (soprano)
- Otto-Crépin, Margit (1945–2020), French dressage rider
- Otto-Dorn, Katharina (1908–1999), German art historian with a focus on Islamic art
- Otto-Franke, Doris (* 1953), German actress
- Otto-Körner, Margarethe († 1937), German theater and silent film actress
- Otto-Kreckwitz, Ernst von (1861–1938), German cynologist and publicist
- Otto-Martineck, Rosa (1836–1928), German theater actress
- Otto-Peters, Louise (1819–1895), writer and co-founder of the German women's movement
- Otto-Thate, Karoline († 1897), German theater actress
- Otto-Walster, August (1834–1898), German politician, journalist and writer
- Otto-Wernthal, Auguste (1833-1856), German theater actress and opera singer (soprano)
- Otto-Zimmermann, Konrad (* 1951), German environmental planner and administrative scientist
- Ottoboni, Pietro (1667–1740), Italian cardinal, patron and librettist
- Ottobre, Mauro (* 1974), Italian politician, member of the Camera dei deputati
- Ottokar from the Gaal , Styrian historian and poet
- Ottokar I. , Margrave of Styria
- Ottokar I. Přemysl († 1230), King of Bohemia
- Ottokar II. († 1122), Margrave of Styria
- Ottokar II. Přemysl († 1278), King of Bohemia, Duke of Austria, Styria, Carinthia and Carniola
- Ottokar III. († 1164), Margrave of Styria
- Ottokar IV. (1163–1192), Duke of Styria
- Ottolenghi, Adolfo , Venetian Jewish scholar and chief rabbi of Venice
- Ottolenghi, Emanuele (* 1969), Italian political scientist and publicist
- Ottolenghi, Giuseppe (1838–1904), Italian lieutenant general
- Ottolenghi, Salvatore (1861–1934), Italian physician, professor of forensic medicine
- Ottolenghi, Yotam (* 1968), Israeli-British cook and cookbook author
- Ottolina, Renny (1928–1978), Venezuelan television entertainer and producer
- Ottolina, Sergio (* 1942), Italian sprinter
- Ottomano, Sara (* 1996), Swiss tennis player
- Ottományi, Katalin (* 1956), Hungarian archaeologist
- Ottomeyer, Friedrich (1838–1895), German entrepreneur
- Ottomeyer, Hans (* 1946), German art historian, President of the German Historical Museum in Berlin (2009–2011)
- Ottomeyer, Klaus (* 1949), German social psychologist, ethnopsychoanalyst and psychotraumatologist
- Ottomeyer, Wilhelm (1867–1950), German entrepreneur
- Otton de Grandson († 1328), nobleman from Savoy, military and diplomat in English service
- Ottonello, Giacomo Guido (* 1946), Italian clergyman, archbishop and diplomat of the Holy See
- Ottoni, Filippo (* 1938), Italian screenwriter and film and dubbing director
- Ottonis, Nicolaus (1592–1649), German Protestant clergyman and vice rector
- Ottosen, Bentiaraq (* 1994), Greenlandic politician (Atassut)
- Ottosen, Karina (* 1981), Faroese triathlete
- Ottosson, Anna (* 1976), Swedish ski racer
- Ottosson, Jan (* 1960), Swedish cross-country skier
- Ottosson, Kristofer (* 1976), Swedish ice hockey player
- Ottosson, Markus (* 1986), Swedish cross-country skier
- Ottosson, Paul (* 1966), Swedish sound engineer
- Ottosson, Ulf (* 1968), Swedish football player
- Ottow, Benno (1884–1975), German-Baltic gynecologist and obstetrician
- Ottow, Fred (1886–1969), German-Baltic publicist, writer and translator
- Ottow, Johann-Christoph (1922–2012), German architect and university professor
- Ottow, Johannes CG (1935–2011), German-Dutch microbiologist
- Ottow, Mutius Aloys (1809-1884), German judge
- Ottoz, Eddy (* 1944), Italian athlete
- Ottrembka, Sebastian (* 1976), German badminton player
- Ottrubay, Stefan (* 1954), Swiss manager
- Ottsen, Otto (1869–1954), teacher at the seminary in Moers and author
- Ottwalt, Ernst (1901–1943), German writer and radio play author
- Ottweiler, Adolph von , son of Duke Ludwig von Nassau-Saarbrücken and participant in the coalition wars
- Ottwin († 1019), Count in Lurngau and Pustertal
Otu
- Otubanjo, Yusuf (* 1992), Nigerian soccer player
- Otunbajewa, Rosa (* 1950), Kyrgyz politician
- Otunga, David (born 1980), American wrestler
- Otunga, Maurice Michael (1923–2003), Kenyan clergyman, Archbishop of Nairobi and Cardinal
- Otunla, Bilikis (* 1994), Nigerian weightlifter
- Otuonye, Ifeanyichukwu (* 1994), British long jumper (Turks and Caicos Islands)
Otw
- Otway, John (born 1952), British songwriter and singer
- Otway, Thomas (1652–1685), English playwright during the Stuart Restoration
- Otwell, Marshall (* 1944), American jazz musician (piano)
Otx
- Otxoa Palacios, Javier (1974-2018), Basque cyclist
- Otxotorena, Xabat (* 1980), Spanish cyclist
Otz
- Otzen, Christina (* 1975), Danish sailor
- Otzen, Johannes (1839–1911), German architect and university professor
- Otzen, Robert (1872–1934), German civil engineer, inventor of the word “Autobahn” and university professor
- Ötzi , glacier mummy
- Otzoup, Serge (1886–1974), Russian film producer