- Obadia J. F.
- Ochoa-Tapia J.A.
- Ochoa-Tapia J Alberto
- Ochoa-Tapia J. Alberto
- Ochoa-Tapia Jesus Alberto
- Odelin Gaëlle
- Odelin Gaelle
- Odic Maxime
- Oeljeklaus Karl
- Oeljeklaus Karl
- Ohana Noé
- Okada Izumi
- Okamoto Naoya
- Okonek Christian
- Okonek Christian
- Oksanen L
- Olimpieri Federico
- Olimpieri Federico
- Oliveau Sébastien
- Olive Daniel
- Olive Frédéric
- Olive Guillaume
- Oliveira Jorge
- Olive Marc
- Olivier Brett
- Olivier Eric
- Olivier Éric
- Olivieri Enzo
- Olivier J
- Olivier Julien
- Olivier Julien
- Ollinger Nicolas
- Olshanski Grigori
- Olympio Anani Ayodélé
- Omer Harold
- Omi Shizue
- Onchis Darian M.
- Onchis-Moaca Darian
- Onishi Ryo
- Opdam Eric
- Oppenheim Georges
- Oppenheim Georges
- Oprocha Piotr
- Orenshtein Tal
- Orive R.
- Orleans Veronica
- Osada Hirofumi
- Oshima M.
- Oshima Motohiko
- Oshurko Eugenia
- Ostaszewski Marek
- Oster C.
- Ostrovski D
- O 'Sullivan Michael E
- Ouaili Lydia
- Oucherif Sabrine Djedjiga
- Oudghiri Yannis
- Ouhabaz El Maati
- Oujia Thibault
- Oujia Thibault
- Ourmières-Bonafos Thomas
- Ourmières-Bonafos Thomas
- Oury Nicolas
- Oversteegen Lex
- Oyono Roger
- Ozbudak Ferruh
- Ozornova Viktoriya