List of all movies and TV series
| Oo Nina Bobo | Movie | 2014 | |
| oo-reun so-geum | Movie | 2011 | |
| Ooh... diese Ferien | Movie | 1958 | |
| Ooh... You Are Awful | Movie | 1972 | (Kos Charlie Tully, enas entimotatos... apateonas) |
| Oomph!: Das weiße Licht | Music Video | 1999 | |
| Oomph!: Gott ist ein Popstar | Music Video | 2006 | (Oomph!: God Is A Popstar) |
| Oomph!: Niemand | Music Video | 2001 | ||
| Oomph!: Sandmann | Music Video | 2009 | |
| Oomph!: Sex hat keine Macht | Music Video | 2004 | |
| Ooops, teka lang... Diskarte ko 'to! | Movie | 2001 | |
| Oorlogswinter | Movie | 2008 | (Winter in Wartime) |
| Ooru naito rongu | Movie | 1992 | (All Night Long) |
| Ooru naito rongu 2: Sanji | Movie | 1995 | (All Night Long 2: Atrocity) |
| Ooru naito rongu 3: Saishuu-shô | Movie | 1996 | (All Night Long 3: The Final Chapter) |
| Ooru naito rongu: Inisharu O | Movie | 2003 | (All Night Long 5) |
| OP Center | Movie made for TV | 1995 | (Countdown des Schreckens) |
| Op de Dijk | Movie | 2016 | |
| Op hun pik getrapt | TV Series | 1979-1980 | |
| Opa! | Movie | 2005 | (Lost in Love) |
| Opal Dream | Movie | 2006 | (Pobby and Dingan) |
| Ópalo de fuego: Mercaderes del sexo | Movie | 1980 | (Opal of Fire: Sex Merchants) |
| Opapatika | Movie | 2007 | (Demon Warriors) |
| Opasnaya lyubov | Mini-Series | 2014 | |
| Opasni trag | Movie | 1984 | (A Dangerous Track) |
| Opel & Larsson´s Rekord-Kvartett: Kerstin, tror du inte att jag fattar? | Music Video | 2014 | ||
| Opel - Automobile für Jedermann | Documentary | 2011 | ||
| Opel GT - Driving The Dream | Documentary | 2010 | |
| Open All Hours | TV Series | 1976-1985 | (Déjenme respirar) |
| Open Cam | Movie | 2005 | (Cam Chat) |
| Open Fire | Movie | 1994 | (Mission Open Fire) |
| Open Grave | Movie | 2013 | |
| Open Graves | Movie | 2009 | |
| Open Heart | TV Series | 2015-?? | |
| Open Road | Movie | 2013 | (Angie) |
| Open Season | Animation Movie | 2006 | (Les rebelles de la fôret) |
| Open Season 2 | Animation Movie | 2008 | |
| Open Season 3 | Animation Movie | 2010 | |
| Open Season: Scared Silly | Animation Movie | 2015 | |
| Open Slather | TV Series | 2015 | |
| Open Water | Movie | 2003 | (En eaux profondes) |
| Open Water 2 | Movie | 2006 | (Adrift) |
| Open Windows | Movie | 2014 | |
| Opening a New Frontier | Documentary | 1955 | |
| Opening Night | Movie | 1977 | (Die erste Vorstellung) |
| Opening Night | Movie | 2016 | (Noche de estreno) |
| Opera | Movie | 1987 | (Dario Argento's Opera) |
| Ópera prima | Movie | 1980 | (Erste Werke) |
| Operace Dunaj | Movie | 2009 | (Operation Danube) |
| Operacion 67 | Movie | 1967 | (Operation 67) |
| Operación Cabaretera | Movie | 1967 | |
| Operación Camarón (Undercover Wedding Crashers) | Movie | 2021 | |
| Operación carambola | Movie | 1968 | |
| Operación Concha (Operation Goldenshell) | Movie | 2017 | (Operation Golden Shell) |
| Operación Fangio | Movie | 1999 | |
| Operación G | Movie | 1962 | |
| Operación México, un pacto de amor | Movie | 2015 | |
| Operación Ogro | Movie | 1980 | (Operation Ogre) |
| Operación Pacífico | TV Series | 2020 | |
| Operación Piroberta | Movie | 2017 | |
| Operación Plus Ultra | Movie | 1966 | |
| Operación rosa rosa | Movie | 1974 | (Operation Rosa Rosa) |
| Operación Secretaria | Movie | 1966 | |
| Operacja Koza | Movie | 1999 | |
| Operacja Samum | Movie | 1999 | (Operation Simoom) |
| Operações Especiais | Movie | 2015 | (Ειδικές αποστολές) |
| Operasjon Arktis | Movie | 2014 | (Operation Arctic) |
| Operasjon Cobra | Movie | 1978 | (Operation Cobra) |
| Operasjon Løvsprett | Movie | 1962 | |
| Opération 'Béton' (Operation Concrete) | Documentary | 1958 | (Opération « Béton ») |
| Operation Amsterdam | Movie | 1959 | (El robo del siglo) |
| Operation Argus | Mini-Series | 1966 | |
| Operation Avalanche | Movie | 2016 | (Operazione Avalanche) |
| Operation Bluebird | Short Movie | 1999 | |
| Operation Brothers | Movie | 2019 | (Operación hermanos) |
| Operation Buffalo | Mini-Series | 2020 | (Operaatio Buffalo) |
| Operation Bullshine | Movie | 1959 | |
| Operation C.I.A. | Movie | 1965 | (Last Message from Saigon) |
| Operation Christmas | Movie made for TV | 2016 | (Operación Navidad) |
| Operation Crossbow | Movie | 1965 | (Unternehmen Crossbow) |
| Operation Cupcake | Movie made for TV | 2012 | (Операция Кексче) |
| Operation Dalmatian: The Big Adventure | Movie | 1997 | |
| Operation Delta Force | Movie made for TV | 1997 | (Great Soldiers) |
| Operation Delta Force 2: Mayday | Movie made for TV | 1997 | (Fuerza de élite) |
| Operation Delta Force 3: Clear Target | Movie | 1998 | (Clear Target) |
| Operation Delta Force 4: Deep Fault | Movie | 1999 | (Operación Delta force 4) |
| Operation Delta Force 5: Random Fire | Movie | 2000 | |
| Operation Diplomat | Movie | 1953 | |
| Operation Dirty Dozen | Documentary | 1967 | |
| Operation Dumbo Drop | Movie | 1995 | (Operación Elefante) |
| Operation Dunkirk | Movie | 2017 | |
| Operation Filmmaker | Documentary | 2007 | |
| Operation Finale | Movie | 2018 | |
| Operation Fortune: Ruse de guerre | Movie | 2023 | (Operacion Fortune: El gran engaño) |
| Operation Ganymed | Movie | 1977 | (Operação Júpiter) |
| Operation Golden Phoenix | Movie | 1994 | (Operação Golden Phoenix) |
| Operation Good Guys | TV Series | 1997-2000 | (Operaatio hyvä yritys) |
| Operation London Bridge | Short Movie | 1975 | |
| Operation Mad Ball | Movie | 1957 | (O Baile Maluco) |
| Operation Manhunt | Movie | 1954 | |
| Operation Pacific | Movie | 1951 | (Unternehmen Seeadler) |