| Obie Scott Wade | screenwriter | 1 |
| Olaf Vugts | theatrical producer | 1 |
| Olan Rogers | screenwriter, actor, television producer, YouTuber | 1 |
| Oleg Kuvaev | screenwriter, animator, sculptor, film director | 1 |
| Oleg Kuzovkov | screenwriter, animator, painter, camera operator, film director, film producer, director, film screenwriter | 1 |
| Oliver Postgate | screenwriter, writer, animator, film director, puppeteer, blogger, autobiographer | 3 |
| Olivier Jean-Marie | screenwriter, animator, film director, director | 1 |
| Olivier Massart | screenwriter, theatre director | 1 |
| Osamu Tezuka | screenwriter, writer, physician, artist, television producer, illustrator, comics artist, film producer | 3 |
| Osvaldo Cavandoli | animator, artist, comics artist, announcer, filmmaker, film director, director, draftsperson | 1 |
| Otmar Gutmann | television producer, filmmaker, director | 1 |
| Owen Dennis | screenwriter, actor, animator, film score composer, voice actor, film director, director, storyboard artist | 2 |