Cary Grant

Barnaby Fulton

Ginger Rogers

Edwina Fulton

Charles Coburn

Oliver Oxley

Marilyn Monroe

Lois Laurel

Hugh Marlowe

Hank Entwhistle

Henri Letondal

Jerome Kitzel

Robert Cornthwaite

Dr. Zoldeck

Larry Keating

G.J. Culverly

Douglas Spencer

Dr. Brunner

Esther Dale

Mrs. Rhinelander

George Winslow

Little Indian

Marjorie Holliday

Oxley Receptionist (uncredited)

Harry Carey, Jr.

Reporter (uncredited)

Nico Minardos

Man at Pool (uncredited)

Charlotte Austin

Student (uncredited)

Harry Bartell

Scientist (uncredited)

Faire Binney

Dowager (uncredited)

Tex Brodus

Club Patron (uncredited)

Olive Carey

Johnny's Mother (uncredited)

Harry Carter

Scientist (uncredited)

Melinda Casey

Girl (uncredited)

Ronnie Clark

Boy (uncredited)

Russ Clark

Policeman (uncredited)

Heinie Conklin

House Painter (uncredited)

George Eldredge

Mr. Peabody (uncredited)

Kathleen Freeman

Mrs. Brannigan - Neighbor (uncredited)

Terry Goodman

Boy (uncredited)

Dabbs Greer

Cabbie (uncredited)

Howard Hawks

Man in Opening (voice) (uncredited)

George Hoagland

Club Patron (uncredited)

Perk Lazelle

Club Patron (uncredited)

Rudy Lee

Boy (uncredited)

Louis Lettieri

Boy (uncredited)

Mickey Little

Boy (uncredited)

Emmett Lynn

Gus (uncredited)

Paul Maxey

Board Member (uncredited)

John McKee

Photographer (uncredited)

Bill McLean

Bellboy (uncredited)

Joseph Mell

Barber (uncredited)

Christopher Milne

Johnny (uncredited)

Jonathan Milne

Johnny (uncredited)

Ray Montgomery

Policeman (uncredited)

Roger Moore

Bit (uncredited)

Brad Morrow

Boy (uncredited)

Forbes Murray

Board Member (uncredited)

Robert Nichols

Garage Man (uncredited)

Jerry Paris

Scientist (uncredited)

Maudie Prickett

Clerk (uncredited)

Jimmy Roebuck

Boy (uncredited)

Harry Seymour

Clothing Store Salesman (uncredited)

Jerry Sheldon

Joe (uncredited)

Olan Soule

Pickwick Arms Clerk (uncredited)

Gil Stratton

Yale Man (uncredited)

Ruth Warren

Laundress (uncredited)

Mack Williams

Board Member (uncredited)

Isabel Withers

Laundress (uncredited)