- O Brother, Where Art Thou? ( 2000 ) Action, Adventure, Comedy
- Oblivion ( 1994 ) Adventure, Comedy, Science Fiction, Western
- Oblivion ( 2013 ) Action, Adventure, Mystery, Science Fiction
- Oblivion Island: Haruka and the Magic Mirror ( 2009 ) Adventure, Animation
- Octopussy ( 1983 ) Action, Adventure, Thriller
- Oddball ( 2015 ) Adventure, Family
- Oh Willy... ( 2013 ) Adventure, Animation, Drama
- Okja ( 2017 ) Adventure, Drama, Fantasy, Science Fiction
- Old Man Khottabych ( 1956 ) Adventure, Family, Fantasy
- Old Shatterhand ( 1964 ) Adventure, Western
- Old Yeller ( 1957 ) Adventure, Drama, Western
- Oliver Twist ( 1948 ) Adventure, Drama, Family
- On Guard ( 1997 ) Adventure, Drama
- On Her Majesty's Secret Service ( 1969 ) Action, Adventure, Thriller
- On the Comet ( 1970 ) Adventure, Fantasy, Science Fiction
- On the Road ( 2012 ) Adventure, Drama
- On the Silver Globe ( 1988 ) Adventure, Fantasy, Science Fiction
- On the Trail of the Bremen Town Musicians ( 1973 ) Adventure, Animation, Family
- Once Upon a Forest ( 1993 ) Adventure, Animation, Family
- Once Upon a Time ( 2008 ) Action, Adventure, Comedy, Foreign
- Once Upon a Warrior ( 2011 ) Action, Adventure, Family, Fantasy, Foreign, Science Fiction
- One Hundred and One Dalmatians ( 1961 ) Adventure, Animation, Comedy, Family
- One Million Years B.C. ( 1966 ) Action, Adventure, Fantasy
- One of Our Dinosaurs Is Missing ( 1975 ) Action, Adventure, Comedy, Drama, Family, Mystery, Thriller
- One Piece Film: GOLD ( 2016 ) Action, Adventure, Animation, Comedy
- One Piece Film Strong World ( 2009 ) Adventure, Animation, Fantasy
- One Piece Film Z ( 2012 ) Action, Adventure, Animation
- One Spy Too Many ( 1966 ) Adventure, Crime
- One Week ( 2008 ) Adventure, Drama
- Ong Bak 2 ( 2008 ) Action, Adventure, Thriller
- Ong Bak 3 ( 2010 ) Action, Adventure, History
- Only Angels Have Wings ( 1939 ) Action, Adventure, Drama, Romance
- Ooops! Noah is Gone... ( 2015 ) Adventure, Animation, Comedy
- Open Season 2 ( 2008 ) Adventure, Animation, Comedy, Family
- Open Season ( 2006 ) Adventure, Animation, Family
- Open Season: Scared Silly ( 2015 ) Adventure, Animation, Comedy, Family
- Operation Dumbo Drop ( 1995 ) Action, Adventure, Comedy, Family
- Operation: Endgame ( 2010 ) Action, Adventure, Comedy, Thriller
- Operation Mekong ( 2016 ) Action, Adventure
- Orca: The Killer Whale ( 1977 ) Adventure, Drama, Horror
- Origin: Spirits of the Past ( 2006 ) Action, Adventure, Animation, Drama, Fantasy, Romance, Science Fiction
- Osmosis Jones ( 2001 ) Action, Adventure, Animation, Comedy, Family
- OSS 117: Cairo, Nest of Spies ( 2006 ) Action, Adventure, Comedy, Crime
- OSS 117: Lost in Rio ( 2009 ) Action, Adventure, Comedy, Crime
- Our Man Flint ( 1966 ) Adventure, Comedy, Fantasy, Science Fiction
- Our Man In Marrakesh ( 1966 ) Adventure, Comedy, Crime, Mystery
- Outcast of the Islands ( 1951 ) Adventure, Drama
- Outpost ( 2007 ) Action, Adventure, Horror
- Over the Garden Wall ( 2014 ) Adventure, Animation, Family, Fantasy
- Oz: The Great and Powerful ( 2013 ) Adventure, Family, Fantasy
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