- The Day That Lasted 21 Years
- O. Henry a Life in Stories
- Objectified
- Obvious Child (2014)
- Occupation: Fighter
- Occupy Love
- Occupy Unmasked
- Oconomowoc
- October Country
- Odd Man Out
- Of By For
- Of Two Minds
- Off and Running
- Off the Grid: Life On the Mesa
- Office Tigers
- OJ: The Musical
- OK Garage
- OK, Good
- Okie Noodling
- Older Than America
- OMG/HaHaHa
- On Broadway
- On My Way
- The Tightrope of Life (On ne mourra pas d'en parler)
- On the Bowery
- On the Road
- On the Road With Judas
- On_Line
- Once
- Once I Was a Champion
- Once in a Blue Moon
- One Bad Cat: The Reverend Albert Wagner Story
- One Bright Shining Moment
- One Day on Earth
- One Direction: Clevver's Ultimate Fan Guide
- One Direction: Reaching for the Stars
- One Hour Fantasy Girl
- One Hour Photo
- One In the Gun
- One Love
- One Night (2007)
- One Night In Powder
- One Peace At a Time
- One Too Many Mornings
- One Track Heart: The Story of Krishna Das
- One Week (2008)
- One Week Job
- Only
- Only God Forgives
- Only the Young
- Open Grave
- Open Windows
- Opening Night
- Opus
- Orchestra of Exiles
- Orgasm Inc.
- Original Gangster
- Oscar and Lucinda
- Otelo Burning
- Other Side of Sleep
- Our City Dreams
- Our Family Wedding
- Our Nixon
- Our Paradise
- Our Song
- OUT in the line-up
- Out Loud (Subtitled)
- Out of the Clear Blue Sky
- Outside Sales
- Outsourced
- Oxyana
- Oy Vey! My Son Is Gay!