o
- William J. O'Brien
- David O'Kane
- Arnold Odermatt
- Albert Oehlen
- Harold Offeh
- Tsukasa Ohtake
- Guy Oliver
- Jacco Olivier
- Nobuaki Onishi
- Hans Op de Beeck
- Catherine Opie
- Ariel Orozco
- Christopher Orr
- Damian Ortega
- Kaz Oshiro
- Gosha Ostretsov
- Silke Otto-Knapp
- Virginia Overton
- Djordje Ozbolt
- Ferhat Özgür
- Ruairiadh O’Connell
