Movies: O
- O Brother, Where Art Thou? (2000)25 quotes
- Object of My Affection, The (1998)1 quote
- Oblivion (2013)10 quotes
- Obsession (2026)24 quotes
- Ocean's Eleven (2001)93 quotes
- Ocean's Thirteen (2007)65 quotes
- Ocean's Twelve (2004)14 quotes
- October Sky (1999)6 quotes
- Octopussy (1983)12 quotes
- Odyssey, The (2026)52 quotes
- Office Christmas Party (2016)15 quotes
- Office Space (1999)91 quotes
- Oh, God! (1977)30 quotes
- Oh, God! Book II (1980)52 quotes
- Oh, God! You Devil (1984)24 quotes
- Oklahoma! (1955)19 quotes
- Old (2021)10 quotes
- Old School (2003)105 quotes
- Old Yeller (1957)10 quotes
- Oldboy (2003)27 quotes
- Oldboy (2013)7 quotes
- Oliver and Company (1988)75 quotes
- Olympus Has Fallen (2013)15 quotes
- Omega Man, The (1971)26 quotes
- Omen, The (1976)32 quotes
- Omen, The (2006)19 quotes
- Omkara (2006)33 quotes
- On Golden Pond (1981)14 quotes
- On Her Majesty's Secret Service (1969)22 quotes
- On Moonlight Bay (1951)1 quote
- On the Waterfront (1954)19 quotes
- Once Upon a Time in America (1984)26 quotes
- Once Upon a Time in Hollywood (2019)28 quotes
- Once Upon a Time in Mexico (2003)7 quotes
- Once Upon a Time in the West (1968)21 quotes
- Once Were Warriors (1994)17 quotes
- One Battle After Another (2025)27 quotes
- One Flew Over the Cuckoo's Nest (1975)49 quotes
- One Hour Photo (2002)12 quotes
- One Hundred and One Dalmatians (1961)46 quotes
- One Magic Christmas (1985)1 quote
- Only the Brave (2017)5 quotes
- Only You (1994)12 quotes
- Onward (2020)23 quotes
- Ooops! Noah Is Gone... (2015)35 quotes
- Open Season (2006)70 quotes
- Open Season 2 (2008)116 quotes
- Open Season 3 (2010)141 quotes
- Open Season: Scared Silly (2015)58 quotes
- Open Water (2004)9 quotes
- Opening of Misty Beethoven, The7 quotes
- Operation Dumbo Drop (1995)13 quotes
- Operation Finale (2018)6 quotes
- Oppenheimer (2023)83 quotes
- Opposite of Sex, The (1998)15 quotes
- Orange County (2002)3 quotes
- Orgazmo (1998)11 quotes
- Original Sin (2001)7 quotes
- Orphan (2009)19 quotes
- Osmosis Jones (2001)92 quotes
- Other Boleyn Girl, The (2008)28 quotes
- Other Guys, The (2010)46 quotes
- Other Woman, The (2014)14 quotes
- Others, The (2001)22 quotes
- Ouija (2014)5 quotes
- Our Idiot Brother (2011)14 quotes
- Out of Sight (1998)12 quotes
- Out of the Past (1947)67 quotes
- Outbreak (1995)29 quotes
- Outlaw Josey Wales, The (1976)19 quotes
- Outside Providence (1999)10 quotes
- Outsiders, The (1983)16 quotes
- Over the Hedge (2006)82 quotes
- Overboard (2018)5 quotes
- Oz the Great and Powerful (2013)32 quotes