Filmography

• The Yellow Balloon (1953) (as Boy singing at Sunday School)
• L'Eterna femmina (1954)
• Make Me an Offer (1954)
• The Green Scarf (1954)
• The Stranger's Hand (1954)
• Dance Little Lady (1955)
• The Dark Avenger (1955)
• The Secret (1955)
• It's Great to Be Young (1956)
• Jacqueline (1956)
• Raiders of the River (1956)
• Dangerous Exile (1957) (as Louis XVII / Richard de Beauvais)
• No Time for Tears (1957)
• The Highwayman (1958)
• Carry On Teacher (1959)
• The Nun's Story (1959)
• Witness in the Dark (1959)
• A Story of David (1960)
• And Women Shall Weep (1960)
• Treasure Island (1960)

Roles when Richard O'Sullivan was older than 15

• Great Expectations (1967) (as Herbert Pocket)

Guest Appearances

• ITV Television Playhouse (1955) (1.13 The Boy About the Place)
• Sherlock Holmes (1955) (1.37 The Case of the Unlucky Gambler)
• Douglas Fairbanks, Jr., Presents (1955) (3.11 Forever Is a Long Time)
• Colonel March of Scotland Yard (1956) (1.18 Error at Daybreak)
• Douglas Fairbanks, Jr., Presents (1956) (5.01 Timmy the Shanks)
• Sword of Freedom (1957) (1.23 The Chart of Gold)
• The Adventures of Robin Hood (1957) (3.14 The Challenge of the Black Knight)
• The Adventures of Robin Hood (1958) (3.23 The Double)
• The Four Just Men (1960) (1.15 The Man with the Golden Touch)