Clark Gable as James Gannon

Doris Day as Erica Stone

Gig Young as Dr. Hugo Pine

Mamie Van Doren as Peggy DeFore

Nick Adams as Barney Kovac

Peter Baldwin as Harold Miller

Marion Ross as Katy Fuller

Charles Lane as Roy

Jack Albertson as Guide

Florenz Ames as J. L. Ballentine

Harry Antrim as Crowley

Vivian Nathan as Mrs. Kovac

Cyril Delevanti as Copy Man (uncredited)

Bess Flowers as Bongo Club Patron (uncredited)

Sandra Gould as Tess (uncredited)

Elizabeth Harrower as Clara Dibney (uncredited)

Kenner G. Kemp as Bongo Club Patron (uncredited)

Frank Richards as Cab Driver (uncredited)

Army Archerd as Himself (uncredited)

James Bacon as Himself (uncredited)

Frank Baker as Tour Group Member (uncredited)

Terry Becker as Mr. Appino (uncredited)

Paul Bradley as Bongo Club Patron (uncredited)

George Cisar as Bongo Club Patron (uncredited)

Oliver Cross as Bongo Club Patron (uncredited)

Hal K. Dawson as Bill (uncredited)

Carl Gardner as Gartner (uncredited)

Larry Leverett as Reporter Who Punches Barney (uncredited)

Philo McCullough as Tour Group Member (uncredited)

William Meader as Florist (uncredited)

Norton Mockridge as Harry (uncredited)

Margaret Muse as Miss Gross (uncredited)

Norman Papson as Bit (uncredited)

Harry 'Snub' Pollard as Reporter (uncredited)

Fred Rapport as Tour Group Member (uncredited)

Victor Romito as Maitre' d (uncredited)

Steffi Sidney as Book Store Girl (uncredited)

Merritt Smith as Mr. Cory (uncredited)

Hal Taggart as Bongo Club Patron (uncredited)