- Oara Cristian
- Obara Tiphaine
- Oberic Lucie
- Ochoa Gilberto
- Ochoa-Ruiza Giberto
- Ochoa-Ruiz Gilbert
- Ochoa‐ruiz Gilberto
- Ochoa-Ruiz Gilberto
- Odell Edward
- Odgaard Peter
- Odille F
- O'Doherty Michael
- Oehlmann Harald
- Ohayon Jordan
- Oh Lee Yong
- Ohser Joachim
- Oien Karin
- Ojeda Javier
- Olama Mohammad
- Olaru Sorin
- Oldrini Guillaume
- Olerud Hilde M.
- Olijnyk Sophie
- Olisemeke Bernard
- Olivares-Mendez Miguel
- Olivares-Peregrino Victor Hugo
- Olivares-Peregrino Víctor-Hugo
- Oliveira José Barata
- Oliveira Ricardo C. L. F.
- Olivier Camille
- Olivier Pierre
- Olivo Malini
- Olsson Anna-Karin
- Olszanecki Barth Jacson Miguel
- Omorou Abdou
- Opdahl Andreas L.
- Orabona Joseph
- Or Charles C.-F.
- Oreiby Ghassan
- Orellana-Romero Eric
- Orgs Guido
- Orjuela Rodolfo
- Orkisz Michal
- Orlandi Ester
- Orlewski Pierre
- Orsi Laurent
- Ortega-Deballon Pablo
- Ortiz Angel
- Ortiz Araya Virna Angélica
- Ortiz Bas Angel
- Ortiz Paul
- Ortiz Torres Gerardo
- Ortiz-Torres Gerardo
- Osemont Benoît
- Osorio Angel
- Osorio-Gordillo Gloria
- Osorio-Gordillo Gloria Lilia
- Osorio-Gordillo Gloria-Lilia
- Osorio-Gordillo Gloria-Lilia
- Osorio Gordillo Gloria Lilia
- Osorio Gordillo Lilia Gloria
- Osorio-Valenzuela Luis
- Ospanova Maryam
- Ossandón José
- Ossendza Roch-Anicet
- Ostrowsky‐coste Karine
- O'Sullivan Declan
- Ottenin Marie-Alexia
- Ottensmeier Christian
- Ouafik L'Houcine
- Ouaïssi Mehdi
- Ouertani Mohamed Zied
- Ouertani Mohamed Zied
- Ouladj Maamar
- Ouladsine Mustapha
- Ouladsine Mustapha
- Oulamara Ammar
- Ounnar Fouzia
- Ousmen Ahmad
- Oussalah Abderrahim
- Oustaloup Alain
- Oustaloup Alain
- Outbib Rachid
- Outbib Rachid
- Outbib Rachid
- Ouvrard Régis
- Ouzzine Mohamed
- Oza Harsh