USA

• 
  *

  O.S.S.

  (1946)
• 
  ***

  Objective, Burma!

  (1945)
• 
  *

  Oblivion

  (2013)
• 
  ***

  Obsession

  (1976)
• 
  *

  Ocean’s 11

  (1960)
• 
  *

  Ocean’s 8

  (2018)
• 
  *

  Ocean’s Eleven

  (2001)
• 
  *

  Ocean’s Thirteen

  (2007)
• 
  *

  Ocean’s Twelve

  (2004)
• 
  ***

  The Octagon

  (1980)
• 
  ***

  Octaman

  (1971)
• 
  *

  Octopussy

  (1983)
• 
  ***

  The Odd Couple II

  (1998)
• 
  ***

  The Odd Couple

  (1968)
• 
  ***

  Odds Against Tomorrow

  (1959)
• 
  *

  Odds and Evens

  (1978)
• 
  **

  Off Limits

  (1988)
• 
  *

  The Offence

  (1973)
• 
  **

  Office Love-In

  (1968)
• 
  *

  Okefenokee

  (1959)
• 
  *

  The Oklahoma Woman

  (1956)
• 
  **

  Old Acquaintance

  (1943)
• 
  ****

  The Old Dark House

  (1932)
• 
  ***

  The Old Dark House

  (1963)
• 
  **

  The Old Maid

  (1939)
• 
  *

  Olga’s Girls

  (1964)
• 
  *

  Olga’s House of Shame

  (1964)
• 
  *

  Olympus Has Fallen

  (2013)
• 
  ***

  Omar Khayyam

  (1957)
• 
  *

  Omega Doom

  (1996)
• 
  ***

  The Omega Man

  (1971)
• 
  ***

  Omen IV: The Awakening

  (1991)
• 
  ***

  The Omen Legacy

  (2001)
• 
  ***

  The Omen

  (2006)
• 
  ***

  The Omen

  (1976)
• 
  *

  On an Island with You

  (1948)
• 
  ***

  On Dangerous Ground

  (1951)
• 
  **

  On Her Bed of Roses

  (1966)
• 
  ***

  On the Beach

  (1959)
• 
  *

  On the Town

  (1949)
• 
  *

  On the Waterfront

  (1954)
• 
  *

  Once a Thief

  (1965)
• 
  *

  Once Upon a Time in America

  (1984)
• 
  ****

  Once Upon a Time in the West

  (1968)
• 
  *

  Once Upon a Time... In Hollywood

  (2019)
• 
  *

  One Away

  (1976)
• 
  ****

  One Battle After Another

  (2025)
• 
  **

  One Body Too Many

  (1944)
• 
  ***

  One Dark Night

  (1982)
• 
  **

  One Down, Two to Go

  (1982)

50 titles