List of authors / O
Oa
- Joyce Carol Oates (born 1938)
If
- René Oberholzer (* 1963)
- Urs Oberlin (1919-2008)
- Edna O'Brien (born 1930)
- Fitz-James O'Brien (1828-1862)
- Flann O'Brien (1911-1966)
- Kate O'Brien (1897–1974)
Oc
- Máirtín Ó Cadhain (1906–1970)
- Sean O'Casey (1880-1964)
- Carol O'Connell (born 1947)
- Frank O'Connor (1903-1966)
- Gemma O'Connor (born 1940)
- Joseph O'Connor (born 1963)
- Mary Flannery O'Connor (1925-1964)
- Tomás Ó Criomhthain (1856–1937)
Od
- Peter O'Donnell (1920-2010)
Oe
- Kenzaburō Ōe (* 1935)
- Petra Oelker (* 1947)
- Jürgen Oelkers (* 1947)
Of
- Nuala O'Faolain (1940-2008)
- Seán O'Faoláin (1900-1991)
- Liam O'Flaherty (1896-1984)
Above
- Yōko Ogawa (* 1962)
- Standish James O'Grady (1846-1928)
Oh
- Andrew O'Hagan (* 1968)
- John O'Hara (1905-1970)
- Saul O'Hara (born 1924)
- Breandán Ó hEithir (1930–1990)
- Oh Gyu-won (* 1941)
- Thomas Ohlemacher (1962–2015)
- Oh Soo-yeon (* 1964)
- Adelheid Ohlig (* 1945)
- Kristina Ohlsson (* 1979)
- Günter Ohnemus (* 1946)
OK
- Celil Oker (1952-2019), TR
- Andreas Okopenko (1930-2010), AT
- Els Oksaar (1926-2015), EE / SE
- Sofi Oksanen (* 1977), FI
On
- Stewart O'Nan (* 1961), US
- Michael Ondaatje (* 1943), CAN
- Eugene O'Neill (1888-1953), US
- Jamie O'Neill (born 1962), IRL
- Juan Carlos Onetti (1909-1994), URY
- Tõnu Õnnepalu (* 1962), EST
Oo
- Hans van Ooyen (* 1954)
Op
- Martin Opitz (1597–1639)
- Karl Oppel (1816–1903)
- Heinrich Albert Oppermann (1812–1870)
Or
- Aras Ören (* 1939)
- Uri Orlev (* 1931)
- José Ortega y Gasset (1883–1955)
- Hanns-Josef Ortheil (* 1951)
- Markus Orths (* 1969)
- Joe Orton (1933-1967)
- George Orwell (1903-1950)
Os
- Cathal Ó Searcaigh (born 1956)
- Diarmaid Ó Súilleabháin (1932–1985)
- Carl von Ossietzky (1889–1938)
- Leonie Ossowski (1925-2019)
- Håkan Östlundh (* 1962)
- Nikolai Alexejewitsch Ostrowski (1904–1936)
- Oswald von Wolkenstein (around 1377–1445)
Ot
- Dominic O. Otiang'a (* 1987)
- Karl-Heinz Ott (* 1957)
- Ossip Ottersleben, see: Norbert Kühne
- Géza Ottlik (1912–1990)
- Otto von Freising (around 1111 / 12–1158)
Ou
- Jean Oury (1924-2014)
Ov
- Ovid (43 BC - ~ 18 AD)
- Angelika Overath (* 1957)
Ow
- John Owen (1563-1622)
Oy
- Ferdinand Oyono (1929-2010)
Oz
- Amos Oz (1939-2018)
- Baydar Özcan (* 1950)
- Celal Özcan (* 1954)
- Emine Sevgi Özdamar (* 1946)
- A. Kadir Özdemir (* 1977)
- Selim Özdoğan (* 1971)
- Yaşar Nuri Öztürk (1945-2016)