- O-Lan Jones (2 movies)
- O.T. Fagbenle (1 movie)
- O'Shea Jackson Jr. (1 movie)
- Oakes Fegley (1 movie)
- Oakley Bull (1 movie)
- Oakley Lehman (1 movie)
- Oana Pellea (1 movie)
- Obada Alassadi (1 movie)
- Obba Babatundé (1 movie)
- Obie Matthew (3 movies)
- Obioma Ugoala (1 movie)
- Octavia Chavez-Richmond (2 movies)
- Octavia Selena Alexandru (1 movie)
- Octavia Spencer (11 movies)
- Octavio Solis (1 movie)
- Oded Fehr (3 movies)
- Odelya Halevi (1 movie)
- Odessa Sykes (1 movie)
- Odette Annable (3 movies)
- Odeya Rush (1 movie)
- Odis Spencer Jr. (1 movie)
- Ofilio Portillo (1 movie)
- Ofu Obekpa (1 movie)
- Oh Chang-kyung (1 movie)
- Oh Dal-su (7 movies)
- Oh Hee-joon (1 movie)
- Oh Hye-won (1 movie)
- Oh Hyun-seok (1 movie)
- Oh Ji-yul (1 movie)
- Oh Jung-se (2 movies)
- Oh San-ha (1 movie)
- Oh Yun-su (1 movie)
- OIin Reynolds (1 movie)
- Ok Ja-yeon (2 movies)
- Oka Antara (1 movie)
- Oksana Akinshina (1 movie)
- Oksana Semenova (1 movie)
- Oksana Zilinskas (1 movie)
- Ola Rapace (2 movies)
- Ola Sturik (1 movie)
- Ólafur Darri Ólafsson (5 movies)
- Olan Montgomery (1 movie)
- Olaniyan Thurmon (1 movie)
- Olaolu Winfunke (1 movie)
- Ole Martin Aune Nilsen (1 movie)
- Oleg Kim (1 movie)
- Oleg Mirochnikov (1 movie)
- Oleg Nasobin (1 movie)
- Oleg Prudius (2 movies)
- Oleg Taktarov (3 movies)
Actors − Letter O windboy2017-08-16T13:43:42+09:00