Marilyn Monroe as Amanda Dell

Yves Montand as Jean-Marc Clement / Alexander Dumas

Tony Randall as Alexander Coffman

Frankie Vaughan as Tony Danton

Wilfrid Hyde-White as George Welch

David Burns as Oliver Burton

Michael David as Dave Kerry

Mara Lynn as Lily Nyles

Dennis King Jr. as Abe Miller

Joe Besser as Charlie Lamont

Milton Berle as Milton Berle (uncredited)

Bing Crosby as Bing Crosby (uncredited)

Gene Kelly as Gene Kelly (uncredited)

Joan Banks as Secretary (uncredited)

Roxanne Tunis as Extra (uncredited)

Madge Kennedy as Miss Manners (uncredited)

Ray Foster as Jimmie (uncredited)

John Craven as Comstock (uncredited)

Richard Haydn as Prologue Narrator (uncredited)

Oscar Beregi Jr. as Chauffeur (uncredited)

Geraldine Wall as Miss Hansen (uncredited)

Samuel Colt as Board member (uncredited)

Byron Morrow as Board member (uncredited)

Owen Cunningham as Board member (uncredited)

Tom Greenway as Board member (uncredited)

Larry Thor as Wilson (uncredited)

Leonard Bremen as Waiter (uncredited)

Jerry Hausner as Willie (uncredited)

Louise Vincent as French secretary (uncredited)

H.T. Tsiang as Charlie, restaurant proprietor (uncredited)

Florence MacMichael as Receptionist (uncredited)

Richard Collier as Doorman (uncredited)

Benny Burt as Cab driver (uncredited)

James Larmore as