- Oberson Frédéric
- O'Brien Denis
- Ocampo González Aldo
- Ochs Magalie
- O'Connel Donnchadh
- O'Connell Anne-Marie
- Odasso Laura
- Odile Livet Marie
- Odiwa Richard O.
- Odoua Hervé
- Ofman Salomon
- Ofman Salomon
- Ogawa Midori
- Ogée Frédéric
- Ogien Albert
- Ogien Ruwen
- Ogun Sewade
- Ohji Kenta
- Ojwang Rosa
- Okamura Cintia
- Okan Ecem
- O'Kelly Rosine
- Okui Haruka
- Okuy Haruka
- Olcèse Rodolphe
- Olié Benoît
- Oliva Adriano
- Oliva Adriano
- Olivares Valencia Amanda
- Oliveira das Neves Estelle
- Oliveira Loraine
- Olive Jean-Paul Maxime
- Olive Julien
- Olivero Massimo
- Olivero Massimo
- Olivier Alain
- Olivier Alain Patrick
- Olivier François
- Olivier Lawrence
- Olivier Morizot
- Olivo G.
- Ollagnier-Beldame Magali
- Ollivier-Mellios Anne
- Olmedo Elise
- Olry-Louis Isabelle
- Olszaniec Wlodzimierz
- Oltean Mara
- Olteanu Alin
- Olympio Noémie
- O’madagain Cathal
- Ombongi Kenneth Samson
- Ombrosi Orietta
- Ometita Mihaï
- Omodeo Pietro Daniel
- Omri Amna
- Omri Emna
- Onaner Can
- Onda François-Joseph
- Onega Jaén Susana
- O'Neill Seamus
- Ong-Van-Cung Kim-Sang
- Ong-Van-Cung Kim Sang
- Onu Madalin
- Openshaw James
- Opitz Rachel
- Orain Orain
- Orazi Françoise
- Orban Edouard
- Ord Toby
- Oréal Elsa
- Orgogozo V
- Origgi Gloria
- Orléan André
- Orobitg Christine
- Orsi Fabienne
- Ortiz Carlos
- Osganian Patricia
- Osta Vélez Matías
- Oster-Stierle Patricia
- O’sullivan Brendan
- Ota Nilton Ken
- Otaola Gonzalez Paloma
- Otha Estelle
- Ottaviani Didier
- Ottavi Dominique
- Ottavi Dominique
- Ouail Assia
- Ouardi Samira
- Ouard Thomas
- Ouattara Karim
- Oudot Pascal
- Ouédraogo Jean
- Oulc'Hen Hervé
- Oumhani Cécile
- Ouss Lisa
- Ouvry-Vial Brigitte
- Ouzilou Olivier
- Ouzilou Olivier
- Over David
- Over D.P.
- Owono Essono Aristide