Artist Index
- Shaun O'Boyle
- John David O'Brien
- Erin O'Flynn
- Lorraine O'Grady
- Erin O'Keefe
- Georgia O'Keeffe
- Coke Wisdom O'Neal
- Terry O'Neill
- John O'Reilly
- Melissa O'Shaughnessy
- Tony O'Shea
- Timothy O'Sullivan
- Christopher Oates
- Leah Oates
- Daniel Obasi
- Frank Ockenfels
- Arnold Odermatt
- Yair Oelbaum
- Richard Oelze
- Dina Oganova
- Abraham Oghobase
- Ahmet Ögüt
- Haji Oh
- Seung Yul Oh
- Ken Ohara
- Eiji Ohashi
- Karl Ohiri
- Hélio Oiticica
- J.D. 'Okhai Ojeikere
- Kayode Ojo
- Michele Oka Doner
- Momo Okabe
- Kōyō Okada
- Toshiko Okanoue
- Ken Okiishi
- Uche Okpa-Iroha
- Yoshiyuki Okuyama
- Erwin Olaf
- Gabriela Oliveira
- Susy Oliveira
- Barret Oliver
- Demetrius Oliver
- Lovie Olivia
- Karyn Olivier
- Matthais Olmeta
- Corey Olsen
- B. Ingrid Olson
- Lennart Olson
- Marisa Olson
- Paulien Oltheten
- Logo Oluwamuyiwa
- Koji Onaka
- Shigeru Onishi
- Yuki Onodera
- Taiyo Onorato and Nico Krebs
- Luigi Ontani
- Cas Oorthuys
- Hans Op de Beek
- Roman Opalka
- John Opera
- Catherine Opie
- Zohra Opoku
- Dennis Oppenheim
- Lisa Oppenheim
- Meret Oppenheim
- Michael Oppitz
- Suzanne Opton
- Andrea Orejarena & Caleb Stein
- Javier Orfón
- Tatsumi Orimoto
- Ruth Orkin
- ORLAN
- Julie Orlick
- Detlef Orlopp
- Uriel Orlow
- Deborah Oropallo
- Gabriel Orozco
- Juan Orrantia
- Camille Orso
- Damián Ortega
- Aitor Ortiz
- Jorge Ortiz
- Liz Orton
- Frida Orupabo
- Mike Osborne
- Christine Osinski
- Ryan Oskin
- George Osodi
- Ruth Ossai
- Andrea Ostera
- Johan Österholm
- Gina Osterloh
- France Scully Osterman/Mark Osterman
- Anna Ostoya
- Spencer Ostrander
- Yasusuke Ota
- Jorge Otero
- Kiyoji Otsuji
- Gen Otsuka
- Hanno Otten
- Ulrike Ottinger
- Arthur Ou
- Amine Oulmakki
- Tony Oursler
- Paul Outerbridge
- Margo Ovcharenko
- Mary Overlie
- Saskia Overzee
- Hugh Owen
- Bill Owens
- Gloria Oyarzabal
