- Obaba
- Off Beat
- Offset
- Offside
- Ogre, The
- Olympia I + II
- On Top Down Under
- One Day in Europe
- One Hour With You
- One Night, One Life
- 112 - Emergency
- Opera Ball (1956)
- Opera Ball (1998)
- Operation Saddam: America’s Propaganda Battle
- Operation Valkyrie
- Orpheus and Eurydice
- Otomo
- Otto; or, Up with Dead People
- Our Daily Bread
- Over Your Cities Grass Will Grow
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