List of all movies and TV series
| On the Line | Movie | 2001 | (Amor sobre rieles) |
| On the Loose | Short Movie | 1931 | |
| On the Loose | Short Movie | 1985 | |
| On the Milky Road | Movie | 2016 | |
| On the Right Track | Movie | 1981 | (Der Millionen-Dollar-Junge) |
| On the Riviera | Movie | 1951 | (Escândalos na Riviera) |
| On the Road | Movie | 2012 | (Na Estrada) |
| On the Road to Switzerland | Documentary | 1941 | ||
| On the Rocks | Movie | 2020 | (En las rocas) |
| On the Ropes | Movie | 2018 | (Betrayal) |
| On the Run | Movie | 1963 | (Edgar Wallace: Einer kann gewinnen) |
| On the Streets of London | Short Movie | 2014 | |
| On the Town | Movie | 1949 | (Een dag te New-York) |
| On the Twelfth Day of Christmas | Movie made for TV | 2015 | (Doce días de Navidad) |
| On the Verge | Short Movie | 2009 | |
| On the Waterfront | Movie | 1954 | (Die Faust im Nacken) |
| On the Wrong Trek | Short Movie | 1936 | (Caminho Errado) |
| On Track for the Eighties | Short Movie | 1980 | (Rail Report 13: On Track for the Eighties) |
| On va s'aimer | Movie | 2006 | (Cheating Love) |
| On va s'aimer un peu, beaucoup | TV Series | 2017-2019 | (Family Business) |
| On voulait tout casser | Movie | 2015 | (We Were Young - Destinazione paradiso) |
| On Your Mark | Short Movie | 1995 | |
| On, ona, oni | Movie | 1981 | (He, She, They) |
| Ona voli Zvezdu (She Likes Red Star) | Movie | 2001 | |
| Once | Movie | 2006 | |
| Once a Jolly Swagman | Movie | 1949 | (Wettfahrt mit dem Tod) |
| Once a Thief | Movie | 1965 | (Millionenraub in San Francisco) |
| Once a Thief | Movie made for TV | 1996 | (John Woo's Once a Thief) |
| Once Again | TV Series | 2016 | |
| Once Around | Movie | 1991 | |
| Once Bitten | Movie | 1985 | (Einmal beißen bitte) |
| Once in a Lifetime | Movie made for TV | 1994 | (Danielle Steel's Once in a Lifetime) |
| Once Is Not Enough | Movie | 1975 | (Einmal ist nicht genug) |
| Once More with Feeling | Movie | 2009 | |
| Once pares de botas | Movie | 1954 | |
| Once Upon a Christmas | Movie made for TV | 2000 | (Santas Weihnachtswunsch) |
| Once Upon a Crime... | Movie | 1992 | (Era uma Vez... um Crime) |
| Once Upon a Girl | Animation Movie | 1976 | |
| Once Upon a Holiday | Movie made for TV | 2015 | (Escapade princière) |
| Once Upon a Lifetime | Movie | 2021 | |
| Once Upon a Spy | Movie made for TV | 1980 | |
| Once Upon a Time | TV Series | 2011-2018 | (Era Uma Vez) |
| Once Upon a Time in America | Movie | 1984 | (Es war einmal in Amerika) |
| Once Upon a Time in London | Movie | 2019 | |
| Once Upon a Time in Mexico | Movie | 2003 | (Era Uma Vez no México) |
| Once Upon a Time In Mumbaai | Movie | 2010 | (Once Upon a Time in Mumbai) |
| Once Upon a Time in the Apocalypse | Movie | 2021 | |
| Once Upon a Time in the Midlands | Movie | 2002 | (Un hombre, una mujer y un extraño) |
| Once Upon a Time in Venice | Movie | 2017 | (Desaparecido en Venice Beach) |
| Once Upon a Time... in Hollywood | Movie | 2019 | (Once Upon a Time in Hollywood) |
| Once Were Warriors | Movie | 1994 | (El amor y la furia) |
| Once You Kiss a Stranger... | Movie | 1969 | (Nunca Beijes um Estranho) |
| Onda Nova (New Wave) | Movie | 1983 | |
| Ondata di calore | Movie | 1970 | (Horas Queimadas) |
| Onde Está a Felicidade? | Movie | 2011 | |
| Onder het Hart | Movie | 2014 | |
| Ondes de choc | Mini-Series | 2018 | (Shock Waves) |
| Ondine | Movie | 2009 | (Amor sin límites) |
| Ondskan | Movie | 2003 | (Evil) |
| Ondskan | Mini-Series | 2023 | (Evil) |
| Ondskans år | Movie made for TV | 1987 | |
| One 2 Many: Downtown | Music Video | 1989 | ||
| One A.M. | Short Movie | 1916 | (Carlitos Boêmio) |
| One and Only | Movie | 2023 | (热烈) |
| One and Two | Movie | 2015 | (One & Two) |
| One Battle After Another | Movie | 2025 | |
| One Big Affair | Movie | 1952 | |
| One by One | Documentary | 1974 | (The Quick and the Dead) |
| One by One | Movie | 2024 | |
| One Cab's Family | Animation Movie | 1952 | (Tex Avery: One Cab's Family) |
| One Chance | Movie | 2013 | (Mi gran oportunidad) |
| One Christmas | Movie made for TV | 1994 | (Truman Capote's One Christmas) |
| One Christmas Eve | Movie made for TV | 2014 | (Objectif Noël) |
| One Crazy Summer | Movie | 1986 | (Ein ganz verrückter Sommer) |
| One Dark Night | Movie | 1983 | (Mausoleum) |
| One Day | Movie | 2011 | (Um Dia) |
| One Day | Mini-Series | 2024 | |
| One Day in Europe | Movie | 2005 | (Galatasaray-Dépor) |
| One Day In Irvine | Documentary | 1971 | |
| One Day Like Rain | Movie | 2007 | |
| One Direction: Gotta Be You | Music Video | 2011 | |
| One Direction: Kiss You | Music Video | 2013 | |
| One Direction: Live While We're Young | Music Video | 2012 | |
| One Direction: Night Changes | Music Video | 2014 | |
| One Direction: One Thing | Music Video | 2012 | |
| One Direction: Steal My Girl | Music Video | 2014 | |
| One Direction: What Makes You Beautiful | Music Video | 2011 | |
| One Dollar | TV Series | 2018-2026 | |
| One Down, Two to Go | Movie | 1982 | (Three the Hard Way Part 2) |
| One Eight Seven | Movie | 1997 | (187) |
| One False Move | Movie | 1992 | (Un faux mouvement) |
| One Fast Move | Movie | 2024 | (Manobra Arriscada) |
| One Fine Day | Movie | 1996 | (Báječný den) |
| One Flew Over the Cuckoo's Nest | Movie | 1975 | (Einer flog über's Kuckucksnest) |
| One Foot in the Grave | TV Series | 1990-2000 | (På gravens rand) |
| One for One | Documentary | 1964 | |
| One for Sorrow | Short Movie | 2022 | |
| One for the Money | Movie | 2012 | (Lovligt byte) |
| One from the Heart | Movie | 1981 | (Einer mit Herz) |
| One Girl's Confession | Movie | 1953 | (Geständnis eines Mädchens) |