- Oddo Salvatore
- O’donovan Tracey
- Oehme Ina
- Ogawa Michinaga
- Oger Joel
- Oghalaie Akbar
- Ogier-Denis Eric
- Ogmundsdottir Margret
- Ogretmen Besim
- Ohama Takashi
- Ohashi Yohei
- Oh Goo Taeg
- Ohmuraya Masaki
- Oh Seon-Hee
- Oh Young
- Oikonomou Vasileios
- Ojha Rani
- Okamoto Koji
- Okazawa Hitoshi
- Oku Masahide
- Okwor I.
- Olad Maryam
- O’leary Seónadh
- Oliván Sara
- Oliveira Jorge
- Ollmann Michael
- Ollomo Benjamin
- Oloomi Mana
- Oloomi Mana
- Oloomi M.
- Olzmann James
- Omar Abdul Rahman
- Omari Shakib
- Omary M. Bishr
- Omidi Maryam
- Ondrej Martin
- Ong Sang-Bing
- Ong Sang-Ging
- Onnis Anna
- Oreiz Farzad
- Orellana Juan
- Orellana-Muñoz Sara
- O’rourke Eyleen
- Ortega-Villaizan Maria del Mar
- Orth Gérard
- Ortiz-Gonzalez Xilma
- Ortona Elena
- Oshaghi Ma
- Oshaghi M.A.
- Osiewacz Heinz
- Osman Abdel-Hamid
- Ostad Seyed Nasser
- Osta Rosario
- O’sullivan Mary
- O’sullivan Timothy
- Otarod V.
- Otegui Marisa
- Otsu Kinya
- Ott Christiane
- Ottobrini Luisa
- Ott T.
- Ouédraogo Jean-Bosco
- Ou Jing-Hsiung James
- Outeiro Tiago
- Owlia Parviz
- Oynebraten Inger
- Ozturk Melek