- Oberlin Thomas
- Oberlin Thomas
- Oberman Adam
- O'Brien James F.
- Ochsenbein Françoise
- O'Connor Noel
- O'Connor Noël
- Oda Toshiyuki
- Oddo Paolo
- Odest Chadwicke
- Odet Patricia
- Oerder Véra
- Ogouchi Mia
- Ogungbenro Kayode
- Oguz Alp
- Ohlmann Marc
- Oh Yonghwan
- Oke Peter R.
- Olechnovic Kliment
- Olechnovič Kliment
- Olechnovič Kliment
- Olechnovič Kliment
- Oliva Baldo
- Oliva Romina
- Oliveira Luciano
- Oliveira Manuel M.
- Oliver Matthieu
- Olivier Anne-Hélène
- Olivier Brice
- Olivier Julien
- Olivier Marchal
- Olivi Martine
- Ollier Edouard
- Ollier Edouard
- Ollivier Yann
- Olteanu Madalina
- Omidvar-Tehrani Behrooz
- Omnès Florian
- Oneata Dan
- Oneata Dan
- Ong-Nicolas Caroline
- Ong Yew Soon
- Opatowski Lulla
- Operto S.
- Operto Stéphane
- Opitz Thomas
- Opitz Thomas
- Oquab Maxime
- Oquab Maxime
- Orange Colette
- Orfila Jean-Baptiste
- Orfila Jean-Baptiste
- Orkisz Jan H.
- Orlandi Giandomenico
- Orlianges Jean-Christophe
- Orlov Yuri V
- Orlov Yury
- Ortega Juan-Pablo
- Ortega Michael
- Orth Dominique
- Ortiz Juan J
- Ortner Mathias
- Ory Jérémie
- Orzan Alexandrina
- Orzan Alexandrina
- Osep Aljosa
- Osokin Anton
- Ost Guilherme
- Osting Braxton
- Ostromoukhov Victor
- Ostrovski Dmitri
- Ostrovskii Dmitrii
- Ostrovskii Dmitrii M.
- Ostrovsky Dmitry
- O'Sullivan Carol
- Ott Christian
- Otte Willem M
- Ouadah Sarah
- Ouangraoua Aïda
- Ouannas Badr
- Oudet Edouard
- Oudjane Nadia
- Oudoumanessah Geoffroy
- Ouhamma Reda
- Ouillon Thomas
- Ouin Annie
- Oujamaa Lydia
- Ouorou Adam
- Ouyang Wanli
- Overby Matthew
- Overton Ian C
- Ovsjanikov Maks
- Ovsjanikov Maks
- Owen Art B
- Owezarski Philippe
- Oza Harshal B.
- Ozenda Olivier
- Ozenda Olivier
- Ozenda Olivier