Actors − Letter O
- Owen Wilson (3 movies)
- Owen Masterson (1 movie)
- Ove Sprogøe (2 movies)
- Otto Sanchez (1 movie)
- Otakuye Conroy (1 movie)
- Ot Palapoo (1 movie)
- Oskar Bökelmann (1 movie)
- Oskar Belton (1 movie)
- Óscar Jaenada (1 movie)
- Oscar Isaac (8 movies)
- Orso Maria Guerrini (1 movie)
- Orly Schuchmacher (2 movies)
- Orlando Smart (1 movie)
- Orlando Brown (1 movie)
- Orlando Bloom (9 movies)
- Orion McCabe (1 movie)
- Ori Pfeffer (1 movie)
- Ophelia Lovibond (1 movie)
- Ona Grauer (2 movies)
- Ona Fletcher (1 movie)
- Omar Sy (2 movies)
- Omar Shargawi (1 movie)
- Omar Hernandez (1 movie)
- Omar Doom (1 movie)
- Omar Benson Miller (1 movie)
- Olutunji Ebun-Cole (1 movie)
- Olov Ludwig (1 movie)
- Olly Alexander (1 movie)
- Ollie Mitchell (1 movie)
- Olivier Girard (1 movie)
- Olivia Williams (1 movie)
- Olivia Wilde (2 movies)
- Olivia Newton-John (1 movie)
- Olivia Munn (2 movies)
- Olivia d'Abo (1 movie)
- Olivia Anselmo (1 movie)
- Oliver Walpole (1 movie)
- Oliver Stone (1 movie)
- Oliver Reed (1 movie)
- Oliver Phelps (7 movies)
- Oliver Maguire (1 movie)
- Oliver Jolliffe (1 movie)
- Oliver Hvidtfeldt (1 movie)
- Oliver Hollingdale (1 movie)
- Oliver Ford Davies (3 movies)
- Oliver Cotton (1 movie)
- Olga Valentina (1 movie)
- Olenka Wrzesniewski (1 movie)
- Oleg Taktarov (4 movies)
- Oleg Mirochnikov (1 movie)