Marie Wilson as Irma Peterson

Diana Lynn as Jane Stacy

Dean Martin as Steve Laird

Jerry Lewis as Seymour

John Lund as Al

Don DeFore as Richard Rhinelander

Hans Conried as Prof. Kropotkin

Kathryn Givney as Mrs. Rhinelander

Percy Helton as Mr. Clyde

Gloria Gordon as Mrs. O'Reilly

Ernö Verebes as Mr. Ubang

Margaret Field as Alice

Chester Conklin as Gypsy Tea Room Waiter (uncredited)

Nick Cravat as Mushie (uncredited)

Franklyn Farnum as Maitre D' (uncredited)

Bess Flowers as Gypsy Tea Room Diner (uncredited)

Hazel Boyne as Gypsy Tea Room Diner (uncredited)

Charles Coleman as Henry

Jimmie Dundee as Wallpaper Man (uncredited)

William Meader as Customer (uncredited)

Walter Merill as Newspaper Man (uncredited)

Howard M. Mitchell as Man in Parking Lot (uncredited)

Jack Mulhall as Radio Context Announcer (uncredited)

Francis Pierlot as Taxman (uncredited)

Joey Ray as Sam the Pet Shop Man (uncredited)

Dewey Robinson as Truck Driver (uncredited)

Billy Snyder as Butcher (uncredited)

Douglas Spencer as Interior Decorator (uncredited)

Ray Stanley as Minor Role (uncredited)

Ian Wolfe as Minister (uncredited)

Chief Yowlachie as Indian (uncredited)

Leonard B. Ingoldest as Orchestra Leader (uncredited)

Ken Niles as Radio Contest Announcer (uncredited)

Harold Miller as Gypsy Tea Room Diner (uncredited)

Sam Harris as Gypsy Tea Room Diner (uncredited)