Jerry Lewis

Joey Robin / Joey Rabinowitz

Anna Maria Alberghetti

Ginny Gibson

Eduard Franz

Cantor Morris Rabinowitz

Molly Picon

Sarah Rabinowitz

Alan Reed

Nathan Gittleson

Joey Faye

Tony De Santos

Barry Gordon

Larry

Del Moore

Harry Lee

Robert Hutton

Television Director

Phil Arnold

Messenger

Sid Cassel

Dr. Miller

Bob Duggan

Stage Manager

Dorain Grusman

Marilyn

Frances Weintraub Lax

Ida

Louise Vincent

Rosalie

Oliver Crawford

Moe

Hal Smith

Laughing man in nightclub (uncredited)