One Potato Two Potato
- Year:
- 2006
- Director:
- Leslie Daiken
United Kingdom
One Precious Year
- Year:
- 1933
- Director:
- Henry Edwards
One Rat's Dream
- Year:
- 2022
- Director:
- Hasan Al-Rashed
One Red Nose and a Wedding
- Year:
- 2019
- Director:
- Mike Newell
One Rogue Reporter
- Year:
- 2014
- Director:
- Tom Jenkinson, Rich Peppiatt
The One Ronnie
- Year:
- 2010
- Director:
- Geoff Posner
One Russian Summer
- Year:
- 1973
- Director:
- Antonio Calenda
One Second Late
- Year:
- 2026
- Director:
- Noah Berridge, Yuli Freed
One Shot of Espresso
- Year:
- 2026
- Director:
- Guy Taylor
The One Show
- Year:
- 2006
- Director:
- N/A
One Small Step: A Star Trek Fan Production
- Year:
- 2022
- Director:
- Samuel Cockings
On Essex Road
- Year:
- 2016
- Director:
- Jem Cohen
One Stop Shop
- Year:
- 1953
- Director:
- Peter Mills
One Street Away
- Year:
- 2021
- Director:
- N/A
One Summer
- Year:
- 1983
- Director:
- N/A
One Sunday Morning
- Year:
- 1997
- Director:
- Manu Kurewa
The One Survivor Of Conifer
- Year:
- N/A
- Director:
- Curt Dennis
The One That Got Away
- Year:
- 1996
- Director:
- Paul Greengrass
The One That Got Away
- Year:
- 2024
- Director:
- Marquand Ragland
The One That Got Away
- Year:
- 2024
- Director:
- N/A
One Thing Left to Do
- Year:
- 2017
- Director:
- Shane Sweeney
One Thousand & One Teardrops
- Year:
- 2014
- Director:
- Fateme Ahmadi
One Thousand Pictures: RFK's Last Journey
- Year:
- 2010
- Director:
- Jennifer Stoddart
One Thousand Years of Slavery
- Year:
- 2021–
- Director:
- N/A
One Track Mind
- Year:
- 2019
- Director:
- Katerina Philippou-Curtis
One-Upmanship
- Year:
- 1976
- Director:
- N/A
One Voice, One Mic
- Year:
- 2019
- Director:
- Ben Gummery
One-way Glass
- Year:
- 2020
- Director:
- Nauman Khalid
One Way Love
- Year:
- 2005
- Director:
- Chase Johnston-Lynch
One Way Out
- Year:
- 1955
- Director:
- Francis Searle
One Way Pendulum
- Year:
- 1965
- Director:
- Peter Yates
One Wild Day
- Year:
- 2020
- Director:
- N/A
One Wish Too Many
- Year:
- 1956
- Director:
- John Durst
One Wrong Word
- Year:
- 2013
- Director:
- Nicole Volavka
On Expenses
- Year:
- 2010
- Director:
- Simon Cellan Jones
Oney Anwar - Chasing the Dream
- Year:
- 2014
- Director:
- Jason Moon
One Year Off
- Year:
- 2023
- Director:
- Philippe Martinez
One, Yellow, You Will Marry A Handsome Fellow
- Year:
- 2019
- Director:
- Ted Fisher
On Falling
- Year:
- 2024
- Director:
- Antonia Luxem
On Giant's Shoulders
- Year:
- 1979
- Director:
- Anthony Simmons
Ongka's Big Moka - The Kawelka of Papua New Guinea
- Year:
- 1974
- Director:
- Charlie Nairn
The Ongoing Conversation
- Year:
- 2023
- Director:
- James Walters
On Her Majesty's Secret Service: Shot on Ice
- Year:
- 1969
- Director:
- N/A
On Her Majesty's Secret Service: Swiss Movement
- Year:
- 1969
- Director:
- Alan Seger
On In 15
- Year:
- 2019
- Director:
- Jack Archer, Joseph Archer
On in Five
- Year:
- 2024
- Director:
- Harvey Albury
On Island West
- Year:
- 2021
- Director:
- Carolyn Saunders
Online Love
- Year:
- 2016
- Director:
- James 'JJ' Johnson
Online Order
- Year:
- 2020
- Director:
- Johan Nayar
On Location: Dustin Hoffman
- Year:
- 1971
- Director:
- Iain Johnstone
Only a Dart
- Year:
- 1908
- Director:
- David Aylott
Only a Few Fans
- Year:
- 2025
- Director:
- N/A
Only Andy
- Year:
- 2024
- Director:
- Andy Lee, Mumtaz Yildirimlar
Only an Excuse?
- Year:
- 1993
- Director:
- N/A
Only a Scream Away
- Year:
- 1974
- Director:
- Peter Jefferies
Only a Woman
- Year:
- 1912
- Director:
- Theo Frenkel
The Only Boy for Me
- Year:
- 2006
- Director:
- Dewi Humphreys
Only Child
- Year:
- 2024
- Director:
- N/A
Only Children
- Year:
- 1984
- Director:
- Michael Rolfe
Only Connect
- Year:
- 2008
- Director:
- N/A
Only Fools and Horses
- Year:
- 1981
- Director:
- N/A
Only Fools and Snoots
- Year:
- 2017–2018
- Director:
- N/A
The Only Girl
- Year:
- 1933
- Director:
- Friedrich Hollaender
Only in America
- Year:
- 2005
- Director:
- N/A
Only Love Matters
- Year:
- 2023
- Director:
- Kamran Qureshi
Only Olivia
- Year:
- 1977
- Director:
- N/A
Only One Person Will Like This Film
- Year:
- 2012
- Director:
- Mark Bowsher
The Only One Who Knows You're Afraid
- Year:
- 2011
- Director:
- Timothy Reynard
Only Sound Remains
- Year:
- 2010
- Director:
- Arash Ashtiani
Only the Names Have Been Changed to Protect the Animals
- Year:
- 1991
- Director:
- James P. Doyle
The Only Way
- Year:
- 1926
- Director:
- Herbert Wilcox
Only What We Carry
- Year:
- 2026
- Director:
- Jamie Adams
Only When I Larf
- Year:
- 1968
- Director:
- Basil Dearden
Only When I Laugh
- Year:
- 1979
- Director:
- N/A
Only Yesterday: The Carpenters' Story
- Year:
- 2007
- Director:
- Samantha Peters
Only You
- Year:
- 2019
- Director:
- Harry Wootliff
On My Level
- Year:
- 2022
- Director:
- Grace Morgan
Onna
- Year:
- 2022
- Director:
- Ashley Nashville
On-Off Licence
- Year:
- 2021
- Director:
- Mark Field
On Order and Away
- Year:
- 2018
- Director:
- N/A
On Our Doorstep
- Year:
- 2023
- Director:
- Thomas Laurance
On Paper
- Year:
- 2016
- Director:
- Nicholas Nazari
On Probation
- Year:
- 1983
- Director:
- Peter Lord, David Sproxton
On Reflection: B.S. Johnson on Dr. Samuel Johnson
- Year:
- 1971
- Director:
- B.S. Johnson
On Safari
- Year:
- 1982–1984
- Director:
- N/A
On Set
- Year:
- N/A
- Director:
- Dylan J. Kershaw
On Such a Night
- Year:
- 1956
- Director:
- Anthony Asquith
On Sunday
- Year:
- 2016
- Director:
- David Lea
On Tender Hooks
- Year:
- 2013
- Director:
- Kate Shenton
On the Ball
- Year:
- 1998–
- Director:
- N/A
On the Ballykissangel Trail
- Year:
- 2000
- Director:
- N/A
On the Banks of Allan Water
- Year:
- 1916
- Director:
- Wilfred Noy
On the Beaches
- Year:
- 2019
- Director:
- Luke Rodgers
On the Beat
- Year:
- 1962
- Director:
- Robert Asher
On the Black Hill
- Year:
- 1988
- Director:
- Andrew Grieve
On the Braden Beat
- Year:
- 1962
- Director:
- N/A
On the Bridge
- Year:
- 2013
- Director:
- Sameer Patel
On the Buses
- Year:
- 1969
- Director:
- Ronald Chesney, Ronald Wolfe
On the Cards
- Year:
- 2022–
- Director:
- N/A
On the Corner of Nowhere
- Year:
- 2024
- Director:
- Finn O'Toole