Author
- O. Henry
- O'Brien Eileen
- O'Connor Elizabeth
- O'Neill Amanda
- O'Neill Michael
- O'Neill Tom
- O'Roarke Elizabeth
- O'Swaite Tessa
- O'hara John
- O'Donoghue Caroline
- O'Connor Kieron
- O'Leary Beth
- O'Neill Gerald
- O'Neill Michael
- O'Farrell Maggie
- O'Brien Flann
- O'Neill Eugene
- Ordinary Mary
- Obion
- Sergey Cover
- Obolenskaya Love
- Igor Obolensky
- Konstantin Obraztsov
- Obraztsov Sergey
- Obrezchikov Anton
- Jurg Obrist
- Obruchev Vladimir
- Eugene Obukhov
- Elena Obuhova
- Lena Obukhova
- Obukhova Tatyana
- Lev Ovalov
- Ovodka Nikita
- Dmitry Ovsyannikov
- Yuriy Ovsyannikov
- Ovchinnikov Alexey
- Vladimir Ovchinsky
- Ogawa Yoko
- Ogawa Ito
- Ohio Seas
- Oganesyan Artak
- Oganesyan Ekaterina
- Ogrizek Masha
- Ogulov Alexander
- Oda Eiichiro
- Oda Julia
- Odell Amy
- Odello Luigi
- Odessa D.S.
- Odintsov Mikhail
- Ludmila Odintsova
- Vladimir Odoevsky
- Irina Odoyevtseva
- Audrey Loic
- Anna Oduvalova
- Odia Erin
- Auger Severin
- Sergei Ozhegov
- Ozari-Luton Sylvie
- Ozpetek Ferzan
- Okazaki Takuma
- Okakura Kakuzo
- Okamoto Keiko
- Catherine of Okovitaya
- Okoneshnikova Natalia
- Ox Sarah
- Bulat Okudzhava
- Okunev Nikolay
- Oakeshott Ewart
- Aleksey Oleynikov
- Olesha Yuriy
- Olifirovich Natalia
- Alcott Louisa
- Alcott Louisa May
- Olmo Benito
- Olmsted Albert
- Allport Gordon
- Olsberg Sasha
- Olsen Lance
- Olsen Mila
- Olt Diana
- Fedor Olferyev
- Baron Olszewry
- Olshaker Mark
- Oldenburg Sergey
- Olkhov Oleg
- Oman Charles
- Omar Maria
- Omar Khayyam
- Omer Mike
- Omon Raphael
- Onda Riku
- And Michael
- Onega Sonsoles
- Onegin Alexei
- Ono Fuyumi
- Onuma Forest Izumi
- Who are they?
- Ooba Tsugumi
- Opimakh Irina
- Orbayseta Angel Sola
- Orbach Danny
- Irina Ordynskaya
- Orengo Jean-Noel
- Orenstein Dora
- Vasily Orekhov
- Nut Anton
- Orlando Paul
- Orlin Benn
- Orlova Anastasia
- Orlova Anna
- Orlova Violetta
- Irina Orlova
- Orlova Talyana
- Ormeau Catherine
- Orsi Thea
- Ortega y Gasset José
- Orton Eric
- Oruña Maria
- George Orwell
- Orshi Somora
- Aurier Philippe
- Osadchenko Marina
- Osaragi Jiro
- Osborne Henry Fairfield
- Osborn Richard
- Charles Osborne
- Oseyeva Valentina
- Osepchuk Venus
- Sergey Osepchuk
- Osipov I.
- Irina Osipova
- Tatiana Osipova
- Oskolkov Artur
- Osman Mat
- Osman Richard
- Alexei Osokin
- Osokin Denis
- Anna Osokina
- Mikhail Osorgin
- Osoyanu Natalia
- Ossovskaia Maria
- Austen Jane
- Austen Hubback Katherine
- Oster Grigory
- Austin Jane
- Austin Sophie
- Austin Todd
- Ekaterina Ostrovskaya
- Tatyana Ostrovskaya
- Alexander Ostrovsky
- Ostrom Elinor
- Ostromina A.
- Ostroumov Lev
- Maxim Oskin
- Otohiko Kaga
- Ott Wolfgang
- Ottolenghi Yotam
- Ou Tash
- Owen David
- Owen Laura
- Owen Peter
- Owen Abigail
- Owens Delia
- Ophelia I. V.
- Ohara Bonnie
- Otsuka Julie
- Otsuki Gentaku
- Oshetsky Claire
- Oschmann Dirk
- Oe Kenzaburo