| O | |
| O Brother, Where Art Thou? | |
| O Lucky Man! | |
| The Object of Beauty | |
| The Object of My Affection | |
| Objective Burma | |
| Ocean's Eleven | |
| Ocean's Twelve | |
| The Octagon | |
| October Sky | |
| Octopussy | |
| Oddballs | |
| The Odessa File | |
| Of Mice and Men | |
| Of Unknown Origin | |
| Off Beat | |
| Off Limits | |
| Off the Lip | |
| Office Killer | |
| Office Space | |
| An Officer and a Gentleman | |
| Oh, God! | |
| Oh, God! You Devil | |
| Oh! Heavenly Dog | |
| Oh! What a Lovely War | |
| Old Gringo | |
| Old School | |
| Old Yeller | |
| Oliver! | |
| Oliver & Company | |
| Oliver Twist | |
| Oliver's Story | |
| Olivier, Olivier | |
| On a Clear Day You Can See Forever | |
| On Deadly Ground | |
| On Golden Pond | |
| On the Air Live With Captain Midnight | |
| On the Line | |
| On the Outs | |
| On the Right Track | |
| On the Waterfront | |
| Once Around | |
| Once More, With Feeling | |
| Once Upon a Crime | |
| Once Upon a Forest | |
| Once Upon a Time in America | |
| Once Upon a Time in Mexico | |
| Once Upon a Time in the Midlands | |
| Once Were Warriors | |
| The One | |
| One Crazy Summer | |
| 187 | |
| One Eyed Jacks | |
| One Fine Day | |
| One Flew Over the Cuckoo's Nest | |
| One From the Heart | |
| One Good Cop | |
| One Hour Photo | |
| 101 Dalmatians | |
| One Little Indian | |
| One Magic Christmas | |
| One Man's Hero | |
| One Night at McCool's | |
| One Night Stand | |
| One of Our Dinosaurs Is Missing | |
| One On One | |
| One Tough Cop | |
| One Trick Pony | |
| One True Thing | |
| Onegin | |
| The Only Game In Town | |
| Only the Lonely | |
| Only the Strong | |
| Only the Strong Survive | |
| Only When I Laugh | |
| Only You | |
| Open Hearts | |
| Open Range | |
| Open Water | |
| Operation Condor | |
| Operation Crossbow | |
| Operation Dumbo Drop | |
| Operation Kid Brother | |
| Operation Snafu | |
| Opportunity Knocks | |
| The Opposite of Sex | |
| The Opposite Sex and How to Live with Them | |
| The Optimists | |
| Orange County | |
| Orca | |
| The Order | |
| Ordinary People | |
| The Oregon Trail | |
| Oregon Trail | |
| The Organization | |
| The Organizer | |
| Original Gangstas | |
| The Original Kings of Comedy | |
| Original Sin | |
| Orlando | |
| Orphans | |
| Osama | |
| Oscar | |
| Oscar And Lucinda | |
| Osmosis Jones | |
| The Osterman Weekend | |
| Othello | |
| The Other | |
| Other People's Money | |
| The Other Side | |
| The Other Side of Midnight | |
| The Other Sister | |
| The Others | |
| Our Lady of the Assassins | |
| Our Relations | |
| Out Cold | |
| Out for Justice | |
| Out of Africa | |
| Out of Bounds | |
| Out Of It | |
| Out of Sight | |
| Out of the Blue | |
| Out of Time | |
| The Out-Of_Towners | |
| Out on a Limb | |
| Out To Sea | |
| Outback (aka Wrangler / Minnamurra) | |
| Outback | |
| Outbreak | |
| The Outing | |
| Outland | |
| Outlaw Blues | |
| The Out-of-Towners | |
| Outrageous! | |
| Outrageous Fortune | |
| The Outside Chance of Maximilian Glick | |
| Outside Providence | |
| The Outsiders | |
| Over the Brooklyn Bridge | |
| Over the Hedge | |
| Over the Top | |
| Overboard | |
| The Owl and the Pussycat | |
| Owning Mahowny | |
| Oxford Blues | |