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- Slaap, Frances (* 1941), British high jumper and hurdler
- Slaats, Frans (1912–1993), Dutch track cyclist
- Slaatto, Helge (* 1952), Swedish university professor, professor for violin at the University of Music in Münster
- Slabakow, Petar (1923–2009), Bulgarian actor and politician
- Slabanja, Manca (* 1995), Slovenian cross-country skier
- Slabbaert, Karel († 1654), Dutch painter and draftsman
- Slabbert, Wicus (* 1941), South African opera singer (baritone)
- Slabe, Tadej (* 1959), Slovenian sport climber
- Slabina, Herta (* 1931), Austrian politician (SPÖ) and councilor
- Slabinac, Krunoslav (* 1944), Yugoslav-Croatian singer
- Slabinsky, Alexander (* 1986), British tennis player
- Słaboń, Damian (* 1979), Polish ice hockey player
- Slaboschpyzkyj, Myroslaw (* 1974), Ukrainian film director and screenwriter
- Słaboszowska, Zofia (1933–2004), Polish actress
- Slabunowa, Emilia Edgardowna (* 1958), Russian politician
- Slaby, Adolf (1849–1913), German electrical engineer
- Slaby, Grit (* 1965), German swimmer
- Slaby, Horst (* 1941), German soccer player
- Slaby, José (* 1958), Polish religious, prelate of Esquel
- Slabý, Miloš (* 1972), Czech handball goalkeeper
- Slabý, Rudolf Jan (1885–1957), German-Czech Romance scholar, translator and lexicographer
- Slacanin, Drazen (* 1970), German-Croatian volleyball and beach volleyball player
- Slach, Anna (1855–1903), German opera singer (soprano)
- Slachta, Margit (1884–1974), founder of the Hungarian order and politician, member of parliament
- Slack, Charles Roger (1937-2016), British biochemist
- Slack, Freddie (1910–1965), American pianist and big band leader
- Slack, John M. (1915–1980) American politician
- Slack, Joshua (* 1976), Australian beach volleyball player
- Slack, Leighton P. (1867–1938) American politician, lawyer, and judge
- Slade, Bernard (1930–2019), Canadian playwright and screenwriter
- Slade, Charles († 1834), American politician
- Slade, Chris (* 1946), British drummer for the Australian hard rock band AC / DC
- Slade, David (* 1969), British film director
- Slade, Felix (1788–1868), English lawyer and art collector
- Slade, Gordon (* 1955), Canadian mathematician
- Slade, Henry (1836–1905) American con artist and charlatan
- Slade, Isaac (* 1981), American musician
- Slade, James M. (1812-1875) American politician
- Slade, John (1908-2005), American broker
- Slade, Madeleine (1892–1982), British wearer of Padma Vibhushan
- Slade, Mark (born 1939), American actor
- Slade, Max Elliott (* 1980), American film actor and current musician
- Slade, Thomas († 1771), English naval engineer
- Slade, Tuiloma Neroni (* 1941), Samoan politician; Secretary General of the Pacific Islands Forum Secretariat
- Slade, William (1786-1859), American politician
- Sládeček, Michal (* 1980), Slovak volleyball player
- Sladecek, Pavel (* 1985), Czech squash player
- Sladeczek, Robert (* 1996), German film producer and guitarist
- Sladek, Alois (1903–1987), German local politician and association official
- Sladek, August (* 1943), German specialist in German
- Sladek, John (1937-2000), American writer
- Sládek, Josef Václav (1845–1912), Czech writer, poet, journalist and translator
- Sladek, Karl (1899–1982), German actor, opera singer and theater director
- Sladek, Maximilian (1875–1925), German stage actor, director and theater director
- Sladek, Michael (* 1946), German doctor, environmental activist and green electricity entrepreneur
- Sládek, Milan (* 1938), Slovak pantomime, director and author
- Sladek, Paulus (1908–2002), German theologian and Augustinian hermit
- Sládek, Pavel (* 1971), Slovak biathlete
- Sladek, Roman (* 1989), German jazz musician (trombone)
- Sladek, Sven (* 1970), German politician (Pirate Party)
- Sladek, Ursula (* 1946), German entrepreneur
- Sládeková, Eva (* 1981), Slovak badminton player
- Sladen, Elisabeth (1946–2011), British actress
- Sladkevičius, Vincentas (1920–2000), Lithuanian clergyman, cardinal of the Roman Catholic Church, Archbishop of Kaunas
- Sládkovič, Andrej (1820–1872), Slovak writer and pastor
- Sladkovský, Karel (1823–1880), Czech journalist and politician
- Sladkow, Yevgeny (* 1983), Kazakh track and road cyclist
- Sladký Kozina, Jan (1652–1695), leader of the Chod uprising
- Sladky, Günter (1929–1981), German boxer
- Sladky, James († 2017), American figure skater
- Sladojević, Fotije (* 1961), Serbian Orthodox bishop
- Slafkovský, Alexander (* 1983), Slovak canoeist
- Slagel, Brian (* 1961), American music manager
- Slager, Mozes (1880–1943), Dutch violinist
- Slagghert, Lambrecht , German Franciscan and chronicler
- Slaghuis, Peter (1961–1991), Dutch DJ and musician
- Slagle, James (* 1934), American computer scientist
- Slagle, Steve (* 1951), American jazz saxophonist
- Slagmuylder, Christophe (* 1967), Belgian curator and cultural manager
- Slagter, Tom (* 1989), Dutch road cyclist
- Slagveer, Luciano (* 1993), Dutch football player
- Slaï (* 1973), French singer
- Slaje, Walter (* 1954), Austrian Indologist and Sanskrit researcher
- Slama, Amir , Brazilian fashion designer, stylist and owner of fashion labels
- Sláma, Bohdan (* 1967), Czech film director and screenwriter
- Slama, David (* 1946), German cameraman
- Sláma, František (1923–2004), Czech cellist and gambist
- Slama, Franz (1885–1938), Austrian lawyer and politician (GdV), member of the state parliament, minister of justice
- Sláma, Igor (* 1959), Czechoslovak cyclist
- Sláma, Karel (* 1934), Czech entomologist
- Slama, Toni (* 1948), Austrian actor
- Slama, Victor Theodor (1890–1973), Austrian painter and graphic artist
- Slaman, Theodore A. (* 1954), American mathematical logician
- Slamar, Dennis (* 1994), German soccer player
- Slamečka, Gustáv (* 1959), Czech politician
- Slamik, Annalena (* 2003), Austrian Nordic combined athlete
- Slamnig, Ivan (1930–2001), Yugoslav or Croatian poet, narrator, essayist and translator
- Slamon, Dennis J. (* 1948), American oncologist
- Slanar, Martin (* 1981), Austrian tennis player
- Slančíková-Timrava, Božena (1867–1951), Slovak writer
- Slane, William MacGuckin de (1801–1878), French-Irish orientalist and translator
- Slaney, John (born 1972), Canadian ice hockey player and coach
- Slaney, Thomas (1852-1935), English football coach and secretary
- Slang, Erik (1600–1642), Swedish major general
- Słania, Czesław (1921–2005), Polish engraver of postage stamps and banknotes
- Slanička, Simona (* 1967), Swiss historian
- Slanina, Katharina (* 1977), German politician (Die Linke)
- Slansky, Richard (1940-1998), American theoretical physicist
- Slánský, Rudolf (1901–1952), Czech politician, General Secretary of the Communist Party of Czechoslovakia (KPČ) (1945–1951)
- Slany, Hans Erich (1926–2013), German designer and university professor
- Slanyu Buanaem (* 1988), Thai soccer player
- Słapakowa, Cecylia , Polish translator and journalist
- Šlapikas, Vytautas (* 1973), Lithuanian chess player
- Slapke, Peter (* 1949), German ice hockey player
- Slapnicka, Harry (1918–2011), Austro-Czech legal scholar, historian and political scientist
- Slappendel, Iris (* 1985), Dutch cyclist and graphic designer
- Šlár, Adolf (1919–1987), Czechoslovak table tennis player
- Slash (born 1965), American rock musician
- Śląska, Aleksandra (1925–1989), Polish actress
- Slaski, Ludwig Mauritius von (1856–1906), Polish manor owner and politician, MdR
- Slaski, Ludwig von (1818–1898), Polish-German manor owner and politician, MdR
- Slastin, Alexander Wladimirowitsch (* 1942), Russian actor
- Slat, Boyan (* 1994), Dutch inventor and entrepreneur
- Slatanow, Dimitar (* 1948), Bulgarian volleyball player and coach
- Slataper, Scipio (1888-1915), Italian writer
- Slatarewa, Borijana (* 1982), Bulgarian ski racer
- Slatarow, Assen (1885–1936), Bulgarian chemist
- Slatarski, Wassil (1866–1935), Bulgarian historian
- Slate, Jenny (* 1982), American actress, stand-up comedian, voice actress and screenwriter
- Slate, Jeremy (1926–2006), American actor
- Slate, Thomas Benton (1880–1980), American inventor and entrepreneur
- Slaten, Troy W. (* 1975), American actor
- Slater, Ashley (* 1961), Canadian musician
- Slater, BJ (born 1965), American porn actor
- Slater, Barney (1923–1978), American screenwriter
- Slater, Bert (1936–2006), Scottish football goalkeeper
- Slater, Bill (1927-2018), English football player
- Slater, Charles (* 1956), American entrepreneur and racing car driver
- Slater, Christian (* 1969), American actor
- Slater, Colby (1896–1965) American rugby union player
- Slater, Cyril (1897–1969), Canadian ice hockey player
- Slater, David J. , British photographer
- Slater, Dick (1951-2018), American wrestler
- Slater, Edward Bede (1774–1832) British clergyman and Benedictine
- Slater, Ethan (* 1992), American actor, singer, writer and composer
- Slater, Glenn (* 1968), American songwriter
- Slater, Heath (born 1983), American wrestler
- Slater, Helen (* 1963), American actress and singer-songwriter
- Slater, Henry Horrocks (1851–1934), English clergyman, ornithologist, entomologist, botanist
- Slater, JD (born 1955), American film director, composer and porn actor
- Slater, Jackie (born 1954), American football player and coach
- Slater, James H. (1826–1899), American politician (Democratic Party)
- Slater, Jim (* 1982), American ice hockey player
- Slater, Jock (born 1938), British admiral
- Slater, John , British figure skater
- Slater, John C. (1900–1976) American physicist and theoretical chemist
- Slater, Joseph, Baron Slater (1904–1977), British politician, Member of the House of Commons
- Slater, Julian (* 1971), British sound engineer
- Slater, Kelly (* 1972), American surfer
- Slater, Ken (1917-2008) British science fiction bookseller and fanatic
- Slater, Lucy Joan (1922–2008), British mathematician and computer scientist
- Slater, Luke (* 1968), British techno musician and DJ
- Slater, Matthew (born 1985), American football player
- Slater, Michael (* 1958), Australian officer
- Slater, Nicola (* 1984), British tennis player
- Slater, Nigel (* 1958), British food journalist, cook and author
- Slater, Noel Bryan (1912–1973) British mathematician and physicist
- Slater, Norman (1894–1979) American rugby union player
- Slater, Robert (* 1964), Australian national soccer player
- Slater, Rodney E. (* 1955), American politician and lawyer
- Slater, Samuel (1768–1835), American entrepreneur and early industrialist
- Slater, Terry (1937-1991), Canadian ice hockey player and coach
- Slateschka, Iwa (* 1988), Bulgarian biathlete
- Slatew, Assen (* 1960), Bulgarian weightlifter
- Slatew, Ivan (* 1990), Bulgarian biathlete
- Slatew, Petar Ivanov (1881–1948), Bulgarian military and prime minister
- Slatew-Tscherkin, Georgi (1905–1977), Bulgarian composer and singing teacher
- Slatewa, Stanka (* 1983), Bulgarian wrestler
- Slatewa, Swetla (* 1952), Bulgarian middle-distance runner and sprinter
- Slatin, Rudolf (1857–1932), Austrian adventurer, British general
- Slatina, Klaus (* 1941), German soccer player
- Slatinski, Christo (* 1985), Bulgarian football player
- Slatkin, Leonard (* 1944), American conductor
- Slatkin, Reed (1949-2015), American entrepreneur and fraudster of millions
- Slatnar, Mateja , Slovenian badminton player
- Slaton, John M. (1866–1955), American politician
- Slaton, Steve (* 1980), American-German ice hockey player
- Slåttebrekk, Sigurd (* 1968), Norwegian pianist
- Slattenschek, Adolf (1901–1979), Austrian technician, founder of the test and research institute TVFA
- Slatter, Kate (* 1971), Australian rower
- Slatter, Leonard (1894–1961), British Air Force officer
- Slattery, Brian Francis (* 1975), American science fiction writer
- Slattery, Edward James (* 1940), American clergyman, emeritus Roman Catholic Bishop of Tulsa
- Slattery, Fergus (born 1949), Irish rugby player
- Slattery, Hugh Patrick (* 1934), Irish religious, former Bishop of Tzaneen
- Slattery, James M. (1878–1948), American politician
- Slattery, Jim (* 1948), American politician
- Slattery, Jimmy (1904–1960), American light heavyweight boxer
- Slattery, John (born 1962), American film and stage actor
- Slattery, Paul (born 1963), British football player (Turks and Caicos Islands)
- Slattery, Ryan (b.1982), American actor, screenwriter, film producer and director
- Slattery, Sara (* 1981), American long-distance runner
- Slattery, William (* 1943), Irish religious, emeritus Roman Catholic Archbishop of Pretoria and military bishop
- Slåttvik, Simon (1917–2001), Norwegian skier
- Slauck, Arthur (1887–1958), German internist and rheumatologist
- Slauerhoff, Jan Jacob (1898–1936), Dutch writer
- Slaughter, Anne-Marie (* 1958), American political scientist
- Slaughter, Charles D. , American astronomer
- Slaughter, D. French (1925–1998), American politician
- Slaughter, Enos (1916–2002), American baseball player
- Slaughter, Frank Gill (1908-2001), American physician and best-selling author
- Slaughter, Gabriel (1767–1830), American Democratic Republican Party politician and governor of Kentucky
- Slaughter, John Brooks (* 1934), American electrical engineer and director of the National Science Foundation
- Slaughter, Karin (* 1971), American writer
- Slaughter, Louise (1929–2018), American politician
- Slaughter, Marcus (* 1985), American basketball player
- Slaughter, Mark (born 1964), American singer, musician and producer
- Slaughter, Nugent (1888–1968), American film technician
- Slaughter, Paul (* 1938), American radio presenter and photographer
- Slaughter, Roger C. (1905–1974), American politician
- Slaughter, Susan , American classical trumpeter
- Slaughter, Tod (1885–1956), English actor
- Slaughterford, Christopher († 1709), the first Englishman to be executed only on the basis of evidence as a murderer
- Slauko the Great († 1226), Bohemian prince, highest chamberlain and castellan of Bilin
- Slauko V. von Riesenburg , Bohemian nobleman from the family of the Hrabischitzer, Riesenburger
- Slava (* 1980), Russian singer, actress and model
- Slavata, Wilhelm (1572–1652), Oberstlandkämmerer and colonel chancellor as well as governor of Bohemia
- Slavec, Gabriela , Slovenian balloon athlete
- Slavens, Pēteris (1874–1919), Latvian military
- Slavetinský, Lukáš (* 1981), German-Czech ice hockey player
- Slavibor , father of the Bohemian Saint Ludmilla of Bohemia
- Slavíček, Antonín (1870–1910), Czech painter
- Slavicek, Bernhard (* 1957), Austrian basketball player
- Slavici, Ioan (1848–1925), Romanian writer and journalist
- Slavick, Bill (* 1927), American peace activist and English professor
- Slavickas, Sigitas (* 1941), Lithuanian politician
- Slavickas, Vaidas (* 1986), Lithuanian football player
- Slavický, Lukáš (* 1980), Czech dancer
- Slavik, Andreas (* 1960), Austrian musician and composer
- Slavík, Antonín František (1893–1942), Czech radio journalist, resistance fighter against the Nazi regime
- Slavik, Felix (1912–1980), Austrian politician (SPÖ), member of the National Council, member of the Federal Council
- Slavík, František (1876–1957), Czech geologist and university professor
- Slavík, Josef (1806–1833), Czech violinist and composer
- Slavík, Tomáš (* 1981), Czech Nordic combined skier
- Slavin, Jaccob (* 1994), American ice hockey player
- Slavin, Mark (1954–1972), Israeli-Russian wrestler, member of the Israeli Olympic wrestling team (1972), murder victim of Palestinian terrorists
- Slavin, Matvey (* 1987), German artist
- Slavin, Neal (* 1941), American photographer, director and film producer
- Slavin, Randall (born 1969), American actor
- Slavin, Wanja (* 1982), German composer and saxophonist
- Slavinec, Romana (* 1990), Austrian triathlete
- Slavišens, Rūdolfs (1909–1995), Latvian football player
- Slavkin, Todd (born 1965), American screenwriter and producer
- Slavnić, Zoran (* 1949), Yugoslav basketball player
- Slavník († 981), regent of the Slavnikids, supposed founder of the family
- Slavomir , Mojmiride, ruler of the Great Moravian Empire
- Slavona, Maria (1865–1931), German impressionist painter
- Slavova, Oksana (* 2001), Austrian rhythmic gymnast
- Slavson, Samuel (1890–1981), American psychiatrist, psychoanalyst, and publicist
- Slawejkow, Pentscho (1866–1912), Bulgarian poet
- Slawejkow, Petko (1827–1895), Bulgarian historian and writer
- Sławek, Tadeusz (* 1946), Polish poet, essayist, translator, literary critic and scholar
- Sławek, Walery (1879–1939), Polish politician, member of the Sejm, Prime Minister of Poland and Sejm Marshal
- Sławiak, Bożena (* 1948), Polish politician, member of the Sejm
- Slawig, Barbara (* 1956), German writer and translator
- Slawig, Johannes (* 1955), German electoral officer, treasurer and department head of Wuppertal
- Slawik, Alexander (1900–1997), Austrian Japanologist
- Slawik, Alfred (1913–1973), Austrian SS Oberscharführer and perpetrator of the Holocaust
- Slawik, Christiane (* 1964), German photographer and author
- Slawik, Eckhard , engineer, photographer and book author
- Slawik, Franz (1936–1993), Austrian politician (SPÖ), member of the state parliament, regional councilor in Lower Austria
- Slawik, Han (* 1944), German engineer and architect
- Sławik, Henryk , Polish politician
- Slawik, Johannes (1892–1969), German farmer and politician (NSDAP), MdR, MdL
- Slawinezki, Jepifani († 1675), East Slavic clergyman and scholar
- Slawinski, Andi (* 1976), German actor
- Sławiński, Bohdan (* 1977), Polish prose writer and literary critic
- Slavyanov, Nikolai Gavrilowitsch (1854–1897), Russian inventor
- Slavkov, Georgi (1958–2014), Bulgarian football player
- Slawkow, Iwan (1940-2011), Bulgarian sports official
- Slawnikowa, Olga Alexandrovna (* 1957), Russian journalist and writer
- Slawnow, Andrei Alexejewitsch (* 1939), Russian physicist
- Slavnov, Sergei Gennadjewitsch (* 1982), Russian figure skater
- Sławoszewska, Maria (1903–1979), Polish historian and archivist
- Slawow, Mykola (1926–2006), Ukrainian diplomat, economist and politician
- Slawow, Myroslaw (* 1990), Ukrainian football player
- Slavsky, Yefim Pavlovich (1898–1991), Russian metallurgist and politician
- Slavchev, Dobromir (* 1973), Bulgarian writer
- Slavchev, Jawor (* 1990), Bulgarian ice hockey player
- Slavchev, Swetoslaw (1926–2016), Bulgarian writer
- Slavcheva, Radoslawa (* 1984), Bulgarian soccer player
- Slawyk, Markku (* 1962), German hockey player
- Slawynskyj, Maksym (1868–1945), Ukrainian author, poet, translator, diplomat and politician
- Slay, Darius (born 1991), American football player
- Slay, Kathleen (* 1991), American volleyball player
- Slayden, James Luther (1853-1924), American politician
- Slaymaker, Amos (1755–1837), American politician
- Slayman, Smas , Cambodian badminton player
- Slayter, Games (1896–1964), American inventor
- Slayton, Deke (1924-1993), American astronaut
- Ślązak, Janusz (1907–1985), Polish rower
- Slazenger, Albert (1844–1910), English entrepreneur and sporting goods manufacturer
- Slazenger, Ralph (1845–1910), English entrepreneur and sporting goods manufacturer
Sle
- Slean, Sarah (* 1977), Canadian singer-songwriter, painter, actress and photographer
- Sleator, Daniel (* 1953), American computer scientist
- Sleator, William (1945–2011), American science fiction writer
- Ślebodziński, Władysław (1884–1972), Polish mathematician
- Šlechta ze Všehrd, Jan (1466–1525), Czech humanist, philosopher and diplomat
- Šlechtová, Karla (* 1977), Czech economist and politician
- Šlechtová, Lenka (* 1991), Czech biathlete
- Sledda of Essex , King of Essex
- Sledge, Eugene (1923-2001), American soldier, author, and university professor
- Sledge, Percy (1940-2015), American R&B and soul singer
- Śledź, Roman (* 1948), Polish wood sculptor
- Sledz, Ulrich (* 1950), German basketball player, referee and official
- Śledziecki, Maciej (* 1977), Polish-German composer, guitarist and experimental musician
- Slee, Ann-Louise (* 1988), Australian badminton player
- Slee, Colin (1945-2010) British Anglican clergyman
- Slee, Jacob Cornelis van (1841–1929), Dutch librarian and preacher
- Sleegers, Herbert (1932–2018), German poet and writer
- Sleem, Mohammed , Indian tennis player
- Sleeman, William Henry (1788-1856) British administrator and detective
- Sleep, Norman , American geophysicist and professor of geophysics at Stanford University
- Sleeper, Albert (1862–1934), American politician
- Sleeper, Henry Davis (1878–1934) American art collector, designer, and interior designer
- Sleepwalker , German rapper and hip-hop producer
- Sleet, Don (1938–1986), American jazz trumpeter
- Sleeth, Layne (* 2001), Canadian tennis player
- Slegers, Saskia (* 1962), Dutch DJ, techno and acid producer
- Šlégr, Jiří (* 1971), Czech ice hockey player, coach and politician, member of the House of Representatives
- Šlegr, Petr (* 1977), Czech Deputy Minister of Transport and Chairman of the Steering Committee of the Czech Railways
- Slehoferova, Vera (* 1949), Swiss classical archaeologist
- Sleifir, Rudolf (1904–1971), German enamelur and engraver
- Sleigher, Pierre-Luc (* 1982), Canadian ice hockey player
- Sleight, Elmer (1907-1988) American football player
- Sleiman (* 1982), Danish rapper
- Sleiman, Haaz (* 1979), American actor
- Sleiman, Jean Benjamin (* 1946), Lebanese religious chaplain, Archbishop of Baghdad
- Sleiman, Rola (* 1975), Lebanese-Syrian pastor and first ordained pastor in the Arab world
- Šleinota, Vaclovas (* 1951), Lithuanian manager and former politician
- Sleker, Johann († 1629), German university professor and clergyman
- Šlekys, Emilis (1951–2012), Lithuanian chess player
- Šlekytė, Giedrė (* 1989), Lithuanian conductor
- Slemmer, Adam J. (1828–1868), American general
- Slemons, William Ferguson (1830–1918), American politician
- Slemp, C. Bascom (1870–1943), American politician
- Slemp, Campbell (1839–1907), American politician
- Slenczka, Notger (* 1960), German Protestant theologian
- Slenczka, Reinhard (* 1931), German Protestant theology professor
- Slenczka, Werner (* 1934), German physician and discoverer of the Marburg virus
- Slenko, Anatolij (* 1938), Ukrainian diplomat and politician, Foreign Minister of Ukraine
- Slentz, Thomas († 1500), German Landsknechtsführer
- Slepenko, Alina (* 1996), Kazakh biathlete
- Slepian, Barnett (1946-1998), American physician
- Slepian, David (1923–2007), American mathematician
- Slepian, Joseph (1891–1969), American mathematician and electrical engineer
- Slepička, Miroslav (* 1981), Czech football player
- Šlepikas, Alvydas (* 1966), Lithuanian actor and writer
- Slepkow, Alexander Nikolajewitsch (1899–1937), Russian revolutionary, victim of Stalinism
- Slepkow, Wassili Nikolajewitsch (1902–1937), Soviet biologist and philosopher
- Slepow, Alexei Alexandrovich (* 1986), Russian biathlete and cross-country skier
- Ślepowrońska, Maja (* 1998), Polish shot putter
- Slepyschew, Anton Wladimirowitsch (* 1994), Russian ice hockey player
- Slepzowa, Swetlana Jurjewna (* 1986), Russian biathlete
- Slesar, Henry (1927–2002), American author
- Šlesers, Ainārs (* 1970), Latvian politician and multiple minister
- Ślesicki, Maciej (* 1966), Polish director, screenwriter and film producer
- Ślesicki, Władysław (1927–2008), Polish film director and screenwriter
- Slesin, Aviva , Lithuanian-American documentary filmmaker and film producer
- Slesinger, Tess (1905–1945), American writer and screenwriter
- Šlesingr, Michal (* 1983), Czech biathlete
- Slesjuk, Ivan (1896–1973), Ukrainian bishop, martyr, blessed
- Slessarenko, Jelena Vladimirovna (* 1982), Russian high jumper
- Slessor, Elliot (* 1994), English snooker player
- Slessor, John (1897–1979) British Air Force officer
- Slessor, Kenneth (1901–1971), Australian poet and journalist
- Slessor, Mary (1848–1915), Scottish missionary in Nigeria
- Śleszyńska, Hanna (* 1959), Polish actress
- Śleszyński, Ivan (1854–1931), Russian-Polish mathematician
- Slettahjell, Solveig (* 1971), Norwegian jazz singer
- Slettemark, Øystein (* 1967), Greenland biathlete and cross-country skier
- Slettemark, Uiloq (* 1965), Greenland biathlete and cross-country skier
- Sletten, Olaf (1886–1943), Norwegian marksman
- Sletto, Barbara (* 1962), American composer, choir director and music teacher
- Sleumer, Albert (1876–1964), Catholic priest and Latinist
- Sleumer, Hermann Otto (1906–1993), German-Dutch botanist
- Sleupner, Dominicus († 1547), Protestant theologian and reformer
- Sleurs, Elke (* 1968), Belgian gynecologist and politician of the Nieuw-Vlaamse Alliantie (N-VA)
- Slevogt, Carl (1787–1832), German architect
- Slevogt, Carl (1845–1922), German lawyer and politician (NLP), MdR
- Slevogt, Carl Wilhelm (1753–1824), Prussian bailiff and manor owner
- Slevogt, Horst (1922–2011), German submarine commander, bank manager and university professor
- Slevogt, Hortense (* 1965), German medic
- Slevogt, Hugo (1857–1926), German architect
- Slevogt, Johann Adrian (1653–1726), German physician
- Slevogt, Johann Philipp (1649–1727), German lawyer and law professor in Jena
- Slevogt, Karl (1876–1951), German designer, automobile pioneer and racing driver
- Slevogt, Karl Eugen (1912–1976), German scientist and company founder of the scientific-technical workshops
- Slevogt, Kurt (1892–1957), German naval officer, most recently vice admiral in World War II
- Slevogt, Marquard (1909–1980), German ice hockey player
- Slevogt, Max (1868–1932), German painter, graphic artist, illustrator and Impressionist set designer
- Slevogt, Paul (1596–1655), German philologist
- Slevogt, Wilhelm August Carl (1709–1767), electoral Saxon commissioner, bailiff and manor owner
- Slew, Jordan (* 1992), English soccer player
- Slewert, Gerd († 1570), reformer from Flensburg
- Ślewiński, Władysław , Polish painter and founding member of the Młoda Polska movement
- Sleyman, Suleyman (* 1979), Swedish football player
- Sleytr, Uwe B. (* 1942), Austrian microbiologist and university professor
- Slezak, Josef Otto (1922–2002), Austrian publisher and author
- Slezak, Leo (1873–1946), Austrian opera singer (tenor) and actor
- Slezak, Margarete (1909–1953), German opera and concert singer
- Slezak, Victor (* 1957), American film and television actor
- Slezak, Walter (1902–1983), Austrian-American film and stage actor
- Slezak-Schindler, Christa (* 1926), German speech artist, reciter and speech therapist
- Slezáková, Petra (* 1981), Slovak biathlete
- Šležas, Andrius (* 1975), Lithuanian basketball player and coach
- Šleževičius, Adolfas (* 1948), Lithuanian politician and prime minister
- Sleževičius, Mykolas (1882–1939), Lithuanian politician and Prime Minister
- Slezkine, Yuri (* 1956), American historian, author, translator and university lecturer
Sli
- Šliažas, Juozas (1925–2009), Lithuanian university professor
- Šlibar, Jože (* 1934), Yugoslav ski jumper
- Slice, Kimbo (1974-2016), American street and mixed martial arts fighter
- Slicher, Ludwig von (1809-1896), major general in Hanover
- Slichter, Charles P. (1924-2018), American solid-state physicist
- Slichter, Louis B. (1896–1978), American geophysicist
- Slick Rick (born 1965), British-American rapper
- Slick, Earl (* 1952), American rock guitarist and composer
- Slick, Grace (born 1939), American singer
- Slick, Mitchy , American rapper
- Slick, Stafford (* 1985), American beach volleyball player
- Šličytė, Zita (* 1943), Lithuanian lawyer and politician (Seimas)
- Slidell, John (1793–1871), American lawyer and politician
- Slier, Jonas (1886–1942), Dutch gymnast
- Slifer, Clarence (1912–1993), American camera assistant and film technician
- Slifer, Roger (1954-2015), American comic book writer
- Slight, Aaron (* 1966), New Zealand motorcycle racer
- Slights, Snowden (1829–1912), English professional hunter and basket maker
- Slijkhuis, Willem (1923–2003), Dutch medium and long-distance runner
- Slijngaard, Ray (* 1971), Dutch musician
- Slijngard, Donovan (* 1987), Dutch football player
- Slijper, Salomon B. (1884–1971), Dutch broker and art collector
- Slik, Ivar (* 1993), Dutch cyclist
- Slikas, Beth (* 1962), American biologist
- Šlikas, Martynas (* 1977), Lithuanian ice hockey player
- Slim 400 (* 1988), American rapper
- Slim Helú, Carlos (* 1940), Mexican entrepreneur in the telecommunications industry
- Slim Jim Phantom (born 1961), American rockabilly drummer
- Slim The Mobster (* 1979), American rapper
- Slim Thug (born 1980), American rapper
- Slim, Carolina (1923–1953) American blues guitarist and singer
- Slim, Iceberg (1918-1992), American pimp and writer
- Slim, John (1885-1966), British wrestler
- Slim, John, 2nd Viscount Slim (1927-2019), British peer and soldier
- Slim, Mongi (1908–1969), Tunisian politician and diplomat
- Slim, Polka Dot (1919–1981), American R&B and blues musician
- Slim, William, 1st Viscount Slim (1891–1970), British Field Marshal, Governor General of Australia
- Slimák, Peter (* 1990), Slovak ice hockey player
- Slimane (* 1989), French pop singer
- Slimane, Hedi (* 1968), French fashion designer, artist and photographer
- Slimani, Chico (born 1971), British singer
- Slimani, Islam (* 1988), Algerian soccer player
- Slimani, Leïla (* 1981), French-Moroccan writer and journalist
- Slimani, Othman (1941-2004), Moroccan economist, father of Leïla Slimani
- Slimani, Sami (* 1990), German presenter and web video producer
- Slimbach, Robert (* 1956), American type designer
- Slimon, Scott (1915–1980), British production designer and art director
- Slind, Astrid Øyre (* 1988), Norwegian cross-country skier
- Slind, Kari Øyre (* 1991), Norwegian cross-country skier
- Slind, Silje Øyre (* 1988), Norwegian cross-country skier
- Šling, Otto (1912–1952), Czechoslovak party functionary
- Slingelandt, Pieter Cornelisz van (1640–1691), Dutch painter
- Slingelandt, Simon van (1664–1736), Dutch aristocrat and politician, Dutch councilor (between 1727 and 1736)
- Slingeneyer, Ernest (1820–1894), Belgian history painter
- Slinger, Cees (1929-2007), Dutch jazz pianist
- Slingerland, Cashandra (* 1974), South African racing cyclist
- Slingerland, James S. (1834-1874), American politician
- Slingerland, John I. (1804–1861) American politician
- Slingo, Julia (* 1950), British climate scientist
- Slings, Simon Roelof (1945-2004), Dutch Graecist
- Slingsby, Tom (* 1984), Australian sailor
- Slingsby, William Cecil (1849–1929), English mountaineer
- Slink, Hermann (1889–1966), German politician (SPD)
- Slinkachu (* 1979), British street artist
- Šliogeris, Arvydas (* 1944), Lithuanian philosopher and professor
- Sliosberg, Henrich (1863–1937), Belarusian-Russian lawyer
- Slipak, Wassyl (1974-2016), Ukrainian opera singer (baritone)
- Slipatschuk, Tetjana (* 1968), Ukrainian lawyer and head of authorities
- Slipčević, Ivana (* 1998), Croatian soccer player
- Slipher, Vesto (1875–1969), American astronomer
- Ślipko, Tadeusz (1918–2015), Polish Jesuit and Catholic philosopher
- Slippens, Robert (* 1975), Dutch cyclist
- Slipper, Jack (1924-2005), British detective
- Slipyj, Jossyf (1892–1984), Ukrainian cardinal and archbishop of Lemberg
- Slišković, Blaž (* 1959), Yugoslav soccer player and Bosnian-Herzegovinian soccer coach
- Slišković, Ivan (* 1991), Croatian handball player
- Sliskovic, Josip (1901–1984), Austrian radio pioneer
- Sliskovic, Lino (* 1998), German actor
- Sliskovic, Luka (* 1995), Swiss football player
- Slišković, Petar (* 1991), Croatian football player
- Slissenko, Anatol Olesjewitsch (* 1941), Russian mathematician
- Slisz, Bartosz (* 1999), Polish football player
- Sliti, Yassir (* 1982), English volleyball player
- Šlitr, Jiří (1924–1969), Czech songwriter, composer, pianist, singer, actor, draftsman and graphic artist
- Šliupas, Arijandas (* 1973), Lithuanian manager and politician
- Slíva, Josef , Czechoslovak figure skater
- Slivăț, Iosif (* 1915), Romanian football player
- Slive, Seymour (1920–2014), American art historian
- Slivka, Martin (1929–2002), Slovak filmmaker
- Slivka, Vykintas (* 1995), Lithuanian football player
- Slivková, Hana (1923–1984), Slovak actress
- Slivnik, David (* 1987), Slovenian-Austrian ice hockey player
- Slivovič, Michal (* 1969), Slovak diplomat
- Śliwa, Bogdan (1922–2003), Polish chess player
- Śliwa, Izabela (* 1990), Polish volleyball player
- Slivenko, Oksana Nikolajewna (* 1986), Russian weightlifter
- Sliwez, Assol (* 1982), Russian freestyle skier
- Sliwez, Zimafej (* 1984), Belarusian freestyle skier
- Śliwińska, Anna (1956–2015), Polish pharmacist and politician, member of the Sejm
- Śliwiński, Andrzej (1939–2009), Polish clergyman, Catholic bishop of Elbląg, Poland
- Śliwiński, Artur (1877–1953), Prime Minister of Poland
- Śliwiński, Hipolit (1866–1932), Polish architect, politician
- Śliwiński, Piotr (* 1962), Polish literary historian and literary critic
- Śliwiński, Robert (1840–1902), German landscape painter
- Śliwiński, Tomasz (* 1979), Polish documentary filmmaker
- Śliwiński, Zbigniew (1924–2003), Polish pianist and music teacher
- Sliwka, Dirk (* 1971), German economist
- Śliwka, Grzegorz (* 1982), Polish ski jumper
- Śliwka, Karol (1894–1943), Czechoslovak communist, Polish nationality
- Śliwka, Krzysztof (* 1967), Polish poet, editor, translator and filmmaker
- Sliwko, Anatoly Jemeljanowitsch (1938–1989), Soviet serial killer
- Slivko, Viktorija Alexandrovna (* 1994), Russian biathlete
- Sliwowski, Carlo (1845–1933), Bishop of Vladivostok
- Śliwowski, Maciej (* 1967), Polish football player
- Slivchenko, Wadym (* 1970), Ukrainian ice hockey player
- Śliż, Rafał (* 1983), Polish ski jumper
- Slizzy Bob , pop singer, musician, producer and songwriter
Slj
- Šljivančanin, Mlađen (* 1985), Serbian basketball player
- Šljivančanin, Veselin (* 1953), Serbian officer in the Yugoslav People's Army
- Šljivić, Nenad (* 1985), Serbian football player
- Šljivo, Edhem (* 1950), Yugoslav football player
- Slyunkov, Nikolai Nikititsch (* 1929), Belarusian and Soviet economist and politician
- Sljusar, Walentyn (* 1977), Ukrainian football player
- Sljusarew, Georgi Georgijewitsch (1896–1987), Russian physicist and university professor
- Sljussar, Iryna (* 1963), Ukrainian athlete
- Slyusareva, Olga Anatoljewna (* 1969), Russian cyclist
Slo
- Sloan, A. Scott (1820–1895), American politician
- Sloan, Alfred P. (1875–1966), President of General Motors
- Sloan, Amy (* 1978), Canadian actress
- Sloan, Andrew (1845–1883), American lawyer and politician
- Sloan, Anna (* 1991), Scottish curler
- Sloan, Blake (* 1975), American ice hockey player
- Sloan, Bridget (* 1992), American gymnast
- Sloan, Charles Henry (1863–1946), American politician
- Sloan, Estelle (1919–2013), American tap dancer
- Sloan, Henry (* 1870), American blues musician
- Sloan, Hugh (born 1940), US Treasurer of the Committee to Re-elect the President
- Sloan, Ithamar (1822–1898), American politician
- Sloan, James († 1811), American politician
- Sloan, Jerry (1942-2020), American basketball player and coach
- Sloan, John (1846–1909) American politician
- Sloan, John French (1871–1951) American painter
- Sloan, Laird (1935-2017), Canadian sprinter
- Sloan, Linda (* 1989), Scottish badminton player
- Sloan, PF (1945-2015), American singer and songwriter
- Sloan, Richard Elihu (1857–1933), American politician
- Sloan, Rick (born 1946), American decathlete
- Sloan, Robin (* 1979), American business IT specialist and novelist
- Sloan, Scott W. (1954-2019), Australian civil engineer
- Sloan, Tina (born 1943), American actress
- Sloan, Tod (1927-2017), Canadian ice hockey player
- Sloan, Tyler (born 1981), Canadian ice hockey player
- Sloan, William Gibson (1838–1914), evangelist and revival preacher
- Sloane, Barry (born 1981), British actor
- Sloane, Carol (born 1937), American jazz singer
- Sloane, Cedric (1915-1992), Australian cross-country skier
- Sloane, Everett (1909–1965), American actor
- Sloane, Hans (1660–1753) English scientist, physician and botanist
- Sloane, John (1779-1856), American politician
- Sloane, Jonathan (1785-1854), American politician
- Sloane, Lindsay (* 1977), American film actress
- Sloane, Neil (* 1939), Australian-American mathematician
- Sloane, Nick (* 1961), South African expert on ship salvage
- Sloane, Peter FE (* 1954), British-German professional and business educator
- Sloane, Steven (* 1958), German-American conductor
- Sloane, William Milligan (1850–1928), American philologist and historian, founding member of the International Olympic Committee (IOC)
- Sloat, John Drake (1781–1867), Military Governor of California
- Sloat, Micah (born 1981), American actor
- Sloatman, Lala (* 1970), American actress
- Slob, Arie (* 1961), Dutch politician (ChristenUnie)
- Slobin, Anton Igorewitsch (* 1993), Russian ice hockey player
- Slobin, Dan (* 1939), American psychologist and linguist
- Slobin, Konstantin Michailowitsch (1902–1973), Soviet theater and film actor
- Slobin, Nikita Sergejewitsch (* 1996), Russian racing car driver
- Slobin, Sergei Jurjewitsch (* 1970), Russian racing car driver
- Slobina, Julija Sergejewna (* 1989), Russian and Azerbaijani ice dancer
- Sloboda, Anton (* 1987), Slovak football player
- Sloboda, Branislav (* 1943), Slovak-German forest scientist, mathematician and computer scientist
- Sloboda, Daniel (1809–1888), Protestant clergyman and botanist
- Sloboda, Wendy , Canadian Vertebrate Paleontologist
- Slobodeniouk, Dima (* 1975), Russian-Finnish conductor
- Slobodian, Quinn (* 1978), Canadian historian
- Slobodjan, Oleksandr (* 1956), Ukrainian entrepreneur, politician and football official
- Slobodjan, Roman (* 1975), German chess player
- Slobodkin, Yuri Maximowitsch (1939–2014), Russian lawyer, judge and professor of law
- Slobodník, Igor (* 1962), Slovak diplomat
- Słobodzianek, Tadeusz (* 1955), Polish playwright, theater director, television director and theater critic
- Slochower, Harry († 1991), American Germanist and psychoanalyst
- Slocom, Arthur Ware (1860–1937), American paleontologist and curator
- Slocombe, Douglas (1913-2016), British cinematographer
- Slocombe, Walter B. (* 1941), American lawyer and politician (Democratic Party)
- Slocum, Henry (1862–1949), American tennis player
- Slocum, Henry Warner (1827-1894), American officer and politician
- Slocum, John († 1892), member of the Squaxin Island Tribe (Sahewamish), an Indian group in Washington
- Slocum, Joshua , Canadian-American sailor and travel writer
- Slocum, Ptolemy (* 1975), American actor
- Slocum, Sally (* 1939), American anthropologist and diplomat
- Slocumb, Jesse (1780-1820), American politician
- Slodczyk, Rainer (* 1950), German soccer player
- Słodki, Marcel , Polish painter, graphic artist and set designer
- Slodnjak, Anton (1899–1983), Yugoslav author, literary scholar and historian
- Slodowy, Peter (1948–2002), German mathematician
- Slodzian, Georges (* 1934), French physicist
- Sloet, Rolf Peter (* 1947), German writer in the genre of science fiction and crime writer
- Slöetjes, Lonneke (* 1990), Dutch volleyball player
- Slogteren, Tialda van (* 1985), Dutch singer
- Slokar, Uroš (* 1983), Slovenian basketball player
- Slokar, Zora (* 1980), Swiss horn player
- Sloma, Leo , German actor
- Słoma, Michał (* 1982), Polish rower
- Sloman, Albert Edward (1921–2012), British Romance philologist and Hispanist, and founding Rector of the University of Essex
- Sloman, Henry B. (1812–1867), German lawyer and author
- Sloman, Henry B. (1848–1931), British-German entrepreneur and banker
- Sloman, Robert Miles (1783–1867), Anglo-German shipowner and politician, Member of the Bundestag
- Sloman, Robert Miles (1812–1900), German shipowner and politician, MdHB, MdR
- Słomczewska, Henryka (1915–1998), Polish long jumper
- Slomiansky, Nissan (* 1946), Israeli politician
- Slomiany, Waldemar (* 1943), German football player
- Slominski, Andreas (* 1959), German painter and object artist
- Slomka, Marietta (* 1969), German journalist and television presenter
- Slomka, Mirko (* 1967), German soccer player and coach
- Słomkowski, Franciszek (1849–1924), Polish violinist, conductor, music teacher and composer
- Slomp, Frits (1898–1978), Dutch pastor and resistance fighter
- Slomšek, Anton Martin (1800–1862), Slovenian spiritual writer
- Slončík, Radek (* 1973), Czech football player
- Slonczewski, Joan (* 1956), American molecular biologist and science fiction author
- Slonczewski, John (1929–2019), American solid-state physicist
- Slongo, Marianne (* 1948), Swiss politician (CVP)
- Słonimski, Antoni (1895–1976), Polish poet and author
- Slonimski, Chajim (1810–1904), Polish Hebrew academic writer and journalist
- Slonimski, Michail Leonidowitsch (1897–1972), Soviet-Russian writer
- Slonimski, Piotr (1922–2009), French molecular biologist and geneticist
- Slonimski, Sergei Michailowitsch (1932–2020), Russian composer, pianist and musicologist
- Slonimsky, Nicolas (1894–1995), American composer and musicologist
- Słonina, Łukasz (* 1989), Polish biathlete
- Słoniowska, Żanna (* 1978), Ukrainian-Polish writer, journalist and translator
- Slonowa, Anastassija (* 1991), Kazakh cross-country skier
- Sloof, Chardine (* 1992), Dutch-Swedish biathlete
- Sloof, Joël (* 1988), Dutch biathlete
- Sloof, Luciën (* 1990), Dutch biathlete
- Sloop, Helga (* 1920), German actress
- Sloot, Jan († 1999), Dutch television technician and inventor of data compression
- Sloot, Nicolina Maria Christina (1853–1927), Dutch writer
- Slooten, Jan-Erik (* 1984), German racing car driver, web video producer and entrepreneur
- Slooten, Luc van (* 2002), German basketball player
- Sloothaak, Franke (* 1958), German-Dutch show jumper
- Slopianka, Inge (* 1944), German dialect writer
- Slory, Andwelé (* 1982), Dutch football player
- Sloskāns, Boļeslavs (1893–1981), Latvian Roman Catholic clergyman, bishop and victim of Stalinism
- Sloss, Daniel (* 1990), Scottish entertainer, actor and author
- Sloss, Joseph Humphrey (1826–1911), American lawyer and politician
- Sloss, Laurence L. (1913-1996), American geologist
- Sloss, Nancy (1928–2018), American film producer
- Slota, Ján (* 1953), Slovak politician, member of the National Council
- Slotawa, Florian (* 1972), German artist
- Slotegraaf, Auke , South African psychohistorian and astronomer
- Sloteko , Protonotarius and Chancellor in Brandenburg, Provost von Demmin
- Sloteko , Protonotarius and Chancellor in Brandenburg, Provost von Demmin
- Slotemaker de Bruine, Jan Rudolph (1869–1941), Dutch Reformed theologian and politician
- Slotemaker, Rob (1929–1979), Dutch racing driver
- Sloterdijk, Peter (* 1947), German philosopher, cultural scientist and essayist
- Sloth, Casper (* 1992), Danish soccer player
- Sloth, Jørn (* 1944), Danish chess master
- Slotin, Louis (1910–1946) Canadian physicist and chemist
- Slotiņš, Roberts (* 1991), Latvian biathlete and cross-country skier
- Slotkin, Elissa (* 1976), American politician
- Slotnick, Daniel (1931–1985), American computer scientist
- Slotnick, Joey (* 1968), American actor
- Slotnikow, Juri Saweljewitsch (1930–2016), Russian artist
- Slotosch, Walter (1911–2006), German economist, business journalist and publicist
- Slotsager, Susanne (* 1966), Danish curler
- Slotschewskyj, Mykola (* 1966), large Ukrainian entrepreneur and politician
- Slotta, Delf (* 1958), German geographer, ministerial official, monument protector and author
- Slotta, Günter (1924–1974), German educator and politician (SPD), Member of the Bundestag
- Slotta, Rainer (* 1946), German industrial archaeologist
- Slottke, Gertrud (1902–1971), German secretary and clerk in the Jewish department in The Hague
- Slottko, Sven-Michael (* 1941), German manager
- Slotty, Friedrich (1881–1963), German Indo-Europeanist
- Sloughter, Henry († 1691), governor of the English colony of New York
- Sloukas, Kostas (* 1990), Greek basketball player
- Sloun, Lars van (* 1990), Dutch ice hockey player
- Slováček, Felix (* 1943), Czech musician, composer, conductor, clarinetist and saxophonist
- Slovak, Hillel (1962–1988), American musician
- Slovak, Marty (1916-1950), American football player
- Slovák, Samuel (* 1975), Slovak football player
- Slovák, Tomáš (* 1983), Slovak ice hockey player
- Slovenčiak, Ján (* 1981), Slovak football player
- Slover, Karl (1918–2011), American short actor of Slovak descent
- Slovic, Paul (* 1938), American psychologist
- Slovig, Geza (1897–1944), Romanian-German church musician, music teacher and composer
- Slovik, Eddie (1920–1945), American soldier executed for desertion during World War II
- Slovo, Gillian (* 1952), South African writer, journalist and film producer
- Slovo, Joe (1926–1995), South African politician and opponent of apartheid
- Slovsa, Bernhard (1919–1999), Austrian clergyman, abbot of Stams Abbey (1973 to 1985)
- Słowacki, Juliusz (1809–1849), Polish poet
- Slowik, Barbara (* 1966), German lawyer, police chief in Berlin
- Słowik, Jakub (* 1991), Polish football goalkeeper
- Słowikowski, Mieczysław Zygfryd (1896–1989), Polish officer and head of intelligence
- Słowiński, Władysław (* 1930), Polish composer and conductor
- Słowiok, Paweł (* 1992), Polish Nordic combined skier
- Slowtide (* 1981), German singer-songwriter
- Slowzow, Pjotr Andrejewitsch (1767–1843), Russian historian, local researcher and poet
- Sloyan, James (* 1940), American film and stage actor
- Sloyan, Samantha (* 1979), American actress
- Složil, Pavel (* 1955), Czech tennis player
Slu
- Sluckis, Mykolas (1928-2013), Lithuanian writer
- Słuczanowski, Aleksander (1900–1942), Polish ice hockey player
- Sluder, Greenfield (1865-1928), American laryngologist
- Sludnow, Roman Andrejewitsch (* 1980), Russian swimmer
- Slug (born 1972), American rapper
- Sluga, Hans (* 1937), German philosopher and university professor
- Slugina, Wera Wassiljewna (* 1985), Russian boxer
- Slugocki, Apollinaris Jakob von (1782–1860), Prussian major general
- Sluijs, Ben (* 1967), Belgian jazz saxophonist
- Sluijters, Iso (* 1990), Dutch handball player
- Sluijters, Jan (1881–1957), Dutch painter
- Sluimer, Kevin (* 1985), Dutch track and road cyclist
- Sluis, Abraham van der (1928-2004), Dutch mathematician
- Sluis, Jan van der (1889–1952), Dutch football player
- Sluiter, Ineke (* 1959), Dutch countess
- Sluiter, Jan Willem (1873–1949), Dutch graphic artist and painter
- Sluiter, Raemon (* 1978), Dutch tennis player
- Sluizer, George (1932-2014), Dutch film director
- Sluev, Igor Denissowitsch (* 1999), Russian snowboarder
- Sluková, Markéta (* 1988), Czech beach volleyball player
- Slundt, Morten (* 1984), Danish handball player
- Slunecko, Hans (* 1968), Austrian soccer player and coach
- Slungård, Anne Kathrine (* 1964), Norwegian politician
- Słupecki, Leszek (* 1956), Polish medieval historian
- Slupetzky, Anton (1899–1987), Austrian entrepreneur, SA member, war criminal
- Slupetzky, Erich (1922–1994), Austrian entrepreneur, politician (FPÖ), right-wing extremist
- Slupetzky, Stefan (* 1962), Austrian writer and illustrator
- Slupianek, Ilona (* 1956), German shot putter and Olympic champion, MdV
- Slupina, Milena (* 1995), German cyclist
- Slupwachter, Hermann (1420–1490), German Roman Catholic theologian and legal scholar
- Slusallek, Philipp (* 1963), German computer scientist
- Ślusarczyk, Franciszek (* 1958), Polish Roman Catholic clergyman, former candidate for auxiliary bishop in Krakow
- Ślusarski, Bartosz (* 1981), Polish football player
- Ślusarski, Tadeusz (1950–1998), Polish athlete (pole vault)
- Ślusarz, Rafał (* 1962), Polish physician and politician
- Sluse, Johannes Walter (1628–1687), cardinal deacon of the Catholic Church
- Slusher, Carlos (* 1971), Belizean football goalkeeper
- Slusher, Richart E. (* 1938), American physicist
- Slushii (* 1997), American DJ and music producer
- Slušný, Miro (* 1964), Slovak ski jumper
- Slušnys, Edgaras (* 1991), Lithuanian badminton player
- Sluter, Claus , Dutch Gothic sculptor and co-founder of the Burgundian art school
- Slüter, Joachim († 1532), German clergyman and reformer in Rostock
- Slüter, Johann (1616–1686), German lawyer, syndic, councilor and mayor of the Hanseatic City of Hamburg
- Slüter, Severin Walther (1646–1697), German Evangelical Lutheran pastor and general superintendent
- Slutzky, Naum (1894–1965), Russian consumer designer
- Sluyter, Monique (* 1967), Dutch artist and actress
- Sluyterman von Langeweyde, Georg (1903–1978), German graphic artist, painter and songwriter
- Sluyterman von Langeweyde, Wolf (* 1895), German writer
- Sluyterman-Böninger, Hans-Gert von (1927–2013), German entrepreneur
- Sluze, René François Walther de (1622–1685), Walloon mathematician, Canon of Liège and Abbot of Amay
- Sluzkaja, Irina Eduardowna (* 1979), Russian figure skater
- Sluzkaja, Maryna (* 1991), Belarusian judoka
- Sluzkaja, Wera Klementjewna (1874–1917), Russian revolutionary
- Sluzki, Evgeni Evgenjewitsch (1880–1948), Soviet mathematical statistician and economist
- Sluzki, Leonid Eduardowitsch (* 1968), Russian politician
- Sluzki, Leonid Wiktorowitsch (* 1971), Russian football player and coach
- Sluzkin, Abram Alexandrowitsch (1891–1950), Soviet physicist
Sly
- Sly, Allan (* 1982), Australian mathematician
- Sly, Tony (1970–2012), American rock musician
- Sly, Wendy (* 1959), British medium and long distance runner
- Sly, William S. (* 1932), American biochemist and molecular biologist
- Slyfield, CO (1898–1974), American sound engineer and cinematographic pioneer
- Slyfield, Jim , American biathlete
- Slynn, Gordon, Baron Slynn of Hadley (1930-2009), British judge and life peer
- Slysch, Maksim (* 1979), Belarusian ice hockey player
- Slythe, Paul (* 1974), British sprinter
- Slyvynsky, Ostap (* 1978), Ukrainian poet, translator, literary critic and literary scholar
- Slywotzky, Adrian (* 1951), American writer