- Obel C
- Obel Niels
- O. Bernabeu Miguel
- Obersteiner Michael
- Oberweger Markus
- Obeso J A
- Obeso Jose A
- O’brien Kathryn
- Ochem Pascal
- Ochoa A
- Ochsenbauer Christina
- Odajima Tetsuya
- Odeber Jacob
- Odicio-Vilchez Joan
- Odunlami Marc
- Oehlberg Lora
- O'Faolain Liam
- Offergeld Kim
- Offringa Martin
- Oger G.
- Ogino Masaki
- Ogouchi Mia
- Ogoudjobi S
- Ogura Takahiro
- Ohama Akio
- Ohmoto Yoshimasa
- Oh Sangkon
- Ohshima Satoshi
- Ohta Masahito
- Ohta Masahito
- Ohta Masahito
- Okada Sanae
- Okamoto R
- Okesola Nonhlanhla
- Olague Gustavo
- Olaosebikan Monsurat
- Olarte Carlos
- Olarte Carlos
- Oldhafer Karl
- Oleksiak Ariel
- Oliver Juan Garrido
- Oliver Stephen G
- Olivi Martine
- Olry Alexis
- Olry Paul
- Olson Karen L
- Olteanu Madalina
- Olteanu Madalina
- Olteanu Madalina
- O'Malley Marcia
- Omar Samir-Mohamad
- Omer Jérémy
- Omnes Pascal
- Omnes Pascal
- Onaisi Racha
- Ondrusova Beata
- Ondrusová Beáta
- O'Neill Louisa
- O'Neill Mark
- Ong Cheng Soon
- Onnela Jukka-Pekka
- Onorato Matthew
- Onwuchekwa Uma
- Ookaki Takashi
- Opatowski Lulla
- Operto S.
- Orain Francois
- Orain François
- Oral Başak
- Oranger Mathilde
- Orbegozo Ana
- Orchard Sandra
- Ordonez Carlos
- Orey Maria
- Orfila Luz
- Orgerie Anne-Cécile
- Orhan Diane
- Orhan Diane
- Orieux Arthur
- Orignac Hugues
- Oriola Bernard
- Oriolo Gianpaolo
- Oriolo Giuseppe
- Orio Patricio
- Orlarey Yann
- Orne-Gliemann Joanna
- Orozco-Arroyave Juan Rafael
- Orozco-Del-Castillo Mauricio-Gabriel
- Orozco Suárez D.
- Orri Massimiliano
- Orriols Ludivine
- Orsega Susan
- Ortega Pablo
- Ortega-Perez Inmaculada
- Ortigues Marty Isabelle
- Ortiz-Aleman Carlos
- Ortonne Nicolas
- Orzan Alexandrina
- Osa Takayuki
- Osborne Cynthia
- Oseledets Ivan
- Osipov Vitaly
- Osmani Nael
- Osman Inès
- Ospici Matthieu
- Ossenkopf-Okada Volker
- Ossenkopf Volker
- Osterwalder Stefan
- Othmani Alice
- Otieno Godfrey T
- Otieno Tuda
- Otono Riku
- Otono Riku
- Ott d'Estevou Philippe
- Ott Michael
- Ouattara Eric
- Ouattara San Maurice
- Oudeyer Pierre-Yves
- Oudin Anne
- Oudjane Nadia
- Oudjane Nadia
- Ouedeyer Pierre-Yves
- Ouédraogo Alphonse
- Ouédraogo Amidou
- Ouedraogo Ismaila
- Ouedraogo Noufou Pêegdwendé
- Ouédraogo Sylvie
- Oufkir Tarik
- Ouhabaz El Maati
- Ouibrahim Laurence
- Oujagir Edward
- Ourabia Raffik
- Ouriachi Marie-Jeanne
- Ouriachi Marie-Jeanne
- Ousidhoum Y
- Ouwens Mario
- Ouzaid Idir
- Owen-Powell Ellen
- Oye Volker
- Ozanne Christophe
- Ozawa Mikki
- Ozenne Valery
- Ozenne Valéry
- Ozenne Valéry
- Oztireli Cengiz
- Oztop Erhan