Shirley MacLaine as Irma La Douce

Jack Lemmon as Nestor Patou

Lou Jacobi as Moustache

Bruce Yarnell as Hippolyte

Herschel Bernardi as Inspector Lefevre

Hope Holiday as Lolita

Joan Shawlee as Amazon Annie

Grace Lee Whitney as Kiki

Paul Dubov as Andre

Howard McNear as Concierge

Cliff Osmond as Police Sergeant

Diki Lerner as Jojo

Herb Jones as Casablanca Charlie

Ruth Earl as Zebra Twin

Jane Earl as Zebra Twin

Tura Satana as Suzette Wong

Lou Krugman as Customer #1

James Brown as Texan Customer

Bill Bixby as Tattooed Sailor

John Alvin as Customer #2

Susan Woods as Poule with Balcony

De De Young as Mimi the MauMau

Sheryl Deauville as Carmen

Billy Beck as Officer Dupont

Jack Sahakian as Jack

James Caan as Soldier with Radio (uncredited)