David Niven as Sir Charles Litton

Herbert Lom as Chef Inspektor Charles Dreyfus

Richard Mulligan as Clouseau's Father

Joanna Lumley as Marie Jouvet

Capucine as Lady Simone Litton

Peter Sellers as Chief Insp. Jacques Clouseau (archive footage)

Julie Andrews as Charwoman

Robert Loggia as Bruno Langois

Burt Kwouk as Cato Fong

Harvey Korman as Prof. Auguste Balls

Leonard Rossiter as Superintendant Quinlan

Ronald Fraser as Dr. Longet

William Hootkins as Taxi Driver

Graham Stark as Hercule Lajoy

Peter Arne as Col. Bufoni

André Maranne as Sergeant François Duval

Marne Maitland as Deputy Commissioner Lasorde

Harold Kasket as President Sandover Haleesh

Liz Smith as Martha Balls (archive footage)

Danny Schiller as Cunny (archive footage)

Denise Crosby as Denise, Bruno's moll

Kathleen St John as Nanna

Harold Berens as Hotel Clerk

Daniel Peacock as Clouseau, age 18

Lucca Mezzofanti as Clouseau, age 8

Madlena Nedeva as Mme. Dreyfuss

Arthur Howard as Arthur, Bruno's butler

Weston Gavin as 1st Mafia Boss

Marc Smith as 2nd Mafia Boss

John Cassady as 3rd Mafia Boss

Gary Whelan as 4th Mafia Boss

Joe Praml as 5th Mafia Boss

Christopher Reich as Gino Rossi

Robert Rietti as Various roles (voice)

Colin Blakely as