Movies with the first letter - "O"
- Open Season 2 (2008)
- Open Season 3 (2010)
- Open Season: Scared Silly! (2015)
- Open Water (2003)
- Open Water 2: Adrift (2006)
- Open Windows (2014)
- Open Your Eyes (1997)
- Opening Night (1977)
- Opera (1987)
- Operación Camarón (2021)
- Operación Feliz Navidad (2021)
- Operações Especiais (2015)
- Operation Alamelamma (2017)
- Operation Bikini (1963)
- Operation Black Ops (2023)
- Operation Carwash: A Worldwide Corruption Scandal Made in Brazil (2017)
- Operation Christmas (2016)
- Operation Christmas Drop (2020)
- Operation Cicero (2019)
- Operation Condor (1991)
- Operation Crossbow (1965)
- Operation Cupcake (2012)
- Operation Dalmatian: The Big Adventure (1997)
- Operation Daybreak (1975)
- Operation Delta Force (1997)
- Operation Delta Force 2: Mayday (1997)
- Operation Delta Force 3: Clear Target (1998)
- Operation Delta Force 4: Deep Fault (1999)
- Operation Delta Force 5: Random Fire (2000)
- Operation Disaster (1950)