- Peter Sellers
- Chief Insp. Jacques Clouseau
- David Niven
- Sir Charles Litton
- Herbert Lom
- Chief Insp. Charles Dreyfus
- Richard Mulligan
- Clouseau's Father
- Joanna Lumley
- Marie Jouvet
- Capucine
- Lady Simone Litton
- Robert Loggia
- Bruno Langois
- Harvey Korman
- Prof. Auguste Balls
- Burt Kwouk
- Cato Fong
- Graham Stark
- Hercule Lajoy
- Peter Arne
- Col. Bufoni
- André Maranne
- Sergeant Francois Duval
- Ronald Fraser
- Dr. Longet
- Leonard Rossiter
- Superintendant Quinlan
- Marne Maitland
- Deputy Commissioner Lasorde
- Harold Kasket
- President Sandover Haleesh
- Liz Smith
- Martha Balls
- Danny Schiller
- Cunny
- Denise Crosby
- Denise, Bruno's moll
- William Hootkins
- Taxi Driver
- Kathleen St. John
- Nanna
- Harold Berens
- Hotel Clerk
- Daniel Peacock
- Clouseau, age 18
- Lucca Mezzofanti
- Clouseau, age 8
- Madlena Nedeva
- Mme. Dreyfuss
- Arthur Howard
- Arthur, Bruno's butler
- Weston Gavin
- 1st Mafia Boss
- Marc Smith
- 2nd Mafia Boss
- John Cassady
- 3rd Mafia Boss
- Gary Whelan
- 4th Mafia Boss
- Joe Praml
- 5th Mafia Boss
- Christopher Reich
- Gino Rossi
- Robert Rietty
- Various roles
- Julie Andrews
- Charwoman
- Colin Blakely
- Section Director Alec Drummond
- Claudia Cardinale
- Princess Dala
- Claire Davenport
- Hotel Maid
- Dan Farrell
- Jacques Clouseau (in WWII footage)
- Rich Little
- Sir Charles Litton
- Ed Parker
- Mr. Chong
- Dudley Sutton
- Hugh McClaren
- Robert Wagner
- George Lytton