- One Day Like Rain
- One Fall
- One False Move
- One from the Heart
- One Good Cop
- One Hour Fantasy Girl
- One Hour Photo
- One Kine Day
- One Last Thing…
- One Man's Hero
- One More Try
- One Night
- One Night (2007)
- One Perfect Day
- One Sunday Afternoon (1933)
- One Too Many Mornings
- One Trick Pony
- One Two Three
- One Week (2008)
- Online
- Only
- Only When I Laugh
- Only When I Laugh
- Only You
- Only You (1994)
- Open Road
- Open Window
- Open Windows
- Open Your Eyes (Abre los Ojos)
- Opening Night
- Operation Crossbow
- Operation Daybreak
- Operation Pacific
- Ordinary Decent Criminal
- Origin - Spirits of the Past
- Orlando
- Oscar and Lucinda
- Oscar® Nominated Live Action Short Films 2012
- Oscura Seduccion
- Otelo Burning
- Othello (1995)
- Other Side of Sleep
- Other Voices, Other Rooms
- Our Lady of the Assassins
- Our Song
- Our Vines Have Tender Grapes
- Out for Justice
- Out in the Dark
- Out Loud (Subtitled)
- Out of Africa
- Out of Love
- Out of Sight
- Out of the Darkness
- Out of the Furnace
- Out of the Past (1947)
- Outbreak
- Outbreak: Anatomy of a Plague
- Outlaw Blues
- Outside Ozona
- Outside the Law (2002)
- Over the Edge
- Over the Edge (1979)
- Over the Hill
- Over the Top