Cary Grant as John D. 'Johnnie' Aysgarth

Joan Fontaine as Lina McLaidlaw Aysgarth

Cedric Hardwicke as General McLaidlaw

Nigel Bruce as Gordon Cochrane 'Beaky' Thwaite

May Whitty as Mrs. McLaidlaw

Isabel Jeans as Mrs. Newsham

Heather Angel as Ethel the Maid

Auriol Lee as Isobel Sedbusk

Reginald Sheffield as Reggie Wetherby

Leo G. Carroll as Captain George Melbeck

Billy Bevan as Ticket Taker (uncredited)

Faith Brook as Alice Barham (uncredited)

Violet Campbell as Mrs. Barham (uncredited)

Leonard Carey as The McLaidlaw's Butler Burton (uncredited)

David Clyde as Trunk Man (uncredited)

Clyde Cook as Photographer (uncredited)

Alec Craig as Hogarth Club Desk Clerk (uncredited)

Carol Curtis-Brown as Jessie Barham (uncredited)

Vernon Downing as Benson (uncredited)

Rex Evans as Mr. Bailey (uncredited)

Edward Fielding as Antique Shop Proprietor (uncredited)

Gavin Gordon as Dr. Bertram Sedbusk (uncredited)

Lumsden Hare as Inspector Hodgson (uncredited)

Alfred Hitchcock as Man Mailing Letter (uncredited)

Gertrude Hoffmann as Mrs. Wetherby (uncredited)

Kenneth Hunter as Sir Gerald (uncredited)

Dorothy Lloyd as Miss Wetherby (uncredited)

Aubrey Mather as Executor of General Laidlaw's Will (uncredited)

Nondas Metcalf as Phyllis Swinghurst (uncredited)

Rita Page as Secretary (uncredited)

Hilda Plowright as Postmistress (uncredited)

Clara Reid as Mrs. Craddock (uncredited)

Maureen Roden-Ryan as Maid - Winnie (uncredited)

Donald Stuart as Photographer (uncredited)

Denis Tankard as Footman (uncredited)

Pax Walker as Maid - Phoebe (uncredited)

Ben Webster as The Registrar William Howe (uncredited)

Elsie Weller as Miss Wetherby (uncredited)

Constance Worth as Mrs. Fitzpatrick (uncredited)