Peter Sellers as Jacques Clouseau

Elke Sommer as Maria Gambrelli

George Sanders as Benjamin Ballon

Herbert Lom as Charles Dreyfus

Graham Stark as Hercule LaJoy

Moira Redmond as Simone

Tracy Reed as Dominique Ballon

Burt Kwouk as Kato

André Maranne as François

Vanda Godsell as Madame LaFarge

Maurice Kaufmann as Pierre

Ann Lynn as Dudu

David Lodge as Georges

Martin Benson as Maurice

Reginald Beckwith as Receptionist

Douglas Wilmer as Henri LaFarge

Bryan Forbes as Camp Attendant

Andre Charisse as Game Warden

Howard Greene as Gendarme

John Herrington as The Doctor

Jack Melford as The Psycho-Analyst

Victor Baring as Taxi Driver

Victor Beaumont as Gendarme

Tutte Lemkow as Kazak Dancer

Fred Hugh as Balding Customer

Rose Hill as Soprano

Peter Evans as Coroner (uncredited)

Tony Castleton as Nudist Band Member (uncredited)

Arnold Schulkes as Nudist (uncredited)