- Olivier Bureau (1 film)
- Olivier Cabassut (1 film)
- Olivier Gourmet (2 films)
- Olivier Rabourdin (3 films)
- Olivier Richters (1 film)
- Olivier Saladin (1 film)
- Olwen Fouéré (1 film)
- Omar Abdi (1 film)
- Omar Sy (6 films)
- Omari Hardwick (1 film)
- Omid Djalili (1 film)
- Onni Tommila (1 film)
- Oona Chaplin (1 film)
- Oona Laurence (2 films)
- Ophélie Winter (1 film)
- Orlando Bloom (2 films)
- Orlando Jones (1 film)
- Ornella Fleury (1 film)
- Orson Welles (1 film)
- Oscar Avila (1 film)
- Óscar Barberán (2 films)
- Oscar Isaac (8 films)
- Óscar Jaenada (1 film)
- Oscar Martínez (1 film)
- Oskar Keymer (1 film)
- Ossie Davis (1 film)
- Otar Saralidze (2 films)
- Otto Jespersen (1 film)
- Otto Kruger (1 film)
- Oulaya Amamra (3 films)
- Ovanes Torosian (1 film)
- Owen Myre (1 film)
- Owen Patrick Joyner (1 film)
- Owen Teague (2 films)
- Owen Wilson (11 films)
- Øystein Røger (1 film)
- Pa O’Reilly (1 film)
- Pablo Derqui (1 film)
- Pablo Pauly (1 film)
- Pablo Schreiber (1 film)
- Paddy Considine (3 films)
- Paddy O’Reilly (1 film)
- Pam Grier (1 film)
- Pamela Adlon (2 films)
- Pamela Anderson (4 films)
- Pamela Hart (1 film)
- Pankaj Tripathi (1 film)
- Pantea Panahiha (1 film)
- Paola Borboni (1 film)
- Paola Nuñez (2 films)
