- O’ Brother Where Art Thou?
- Obey
- Oblivion
- Observance
- Obsessed
- Ocean’s Eleven
- Ocean Twelve
- Ocean’s Thirteen
- Ocean’s Eight
- Ocean Waves
- Octopussy
- Oculus
- Occurrence on Mills Creek
- Odd Life of Timothy Green
- Oddsockeaters
- Odd Thomas
- Odyssey
- Of Minor Prophets
- Offensive
- Off the Menu
- Office
- Okja
- Oklahoma!
- Oldboy (2013)
- Old Man & The Gun
- Oliver, Stoned
- Olympus Has Fallen
- Omega Man
- OMG We’re in a Horror Movie!!
- On Her Majesty’s Secret Service
- Once Upon a Time in a Haunted House
- Once Upon a Time in Hollywood
- Once Upon a Time in the Midlands
- Once Upon a Time in the West
- One Cut of the Dead
- One Day In September
- One Flew Over the Cuckoo’s Nest
- One Hour Photo
- One in the Chamber
- One Last Score
- One Missed Call
- One Missed Call 2
- One Missed Call (2008)
- One More Time
- One Night in Miami
- Ong Bak 2: The Beginning
- Ong Bak 3
- Only Lovers Left Alive
- Only the Brave
- Only Yesterday
- Onward
- Open 24 Hours
- Open Grave
- Open Graves
- Open House (2010)
- Open House, The
- Open Water
- Open Water 2: Adrift
- Open Water 3: Cage Dive
- Open Windows
- Operation Chromite
- Opposite Sex
- Order, The
- Ordinary World
- Oranges, the
- Origin Wars
- Orphanage, The
- Other Guys, The
- Other Side of the Door
- Other Woman, the
- OtherLife
- Others, The
- Ottoman Lieutenant
- Ouija
- Ouija: Origin of Evil
- Ouija Seance: The Final Game
- Ouija Shark
- Our Brand of Crisis
- Our Kind of Traitor
- Our Last Tango
- Out of Sight
- Out of the Dark
- Out of the Furnace
- Out of the Shadows
- Outlander
- Outlaw (2007)
- Outlaw King
- Outlaws
- Outlawed
- Outpost
- Outpost: Black Sun
- Outpost: Rise of the Spetsnaz
- Outside the Wire
- Outsider (2018)
- Outsiders, The
- Overlord
- Overnight, the
- Owners
- Oz The Great And Powerful
