James Stewart
as Det. John 'Scottie' Ferguson

Kim Novak
as Madeleine Elster / Judy Barton

Barbara Bel Geddes
as Marjorie 'Midge' Wood

Tom Helmore
as Gavin Elster

Henry Jones
as Coroner

Raymond Bailey
as Scottie's Doctor

Ellen Corby
as Manager of McKittrick Hotel

Konstantin Shayne
as Pop Leibel

Lee Patrick
as Car Owner Mistaken for Madeleine

Bess Flowers
as Diner at Ernie's (uncredited)

Alfred Hitchcock
as Man Walking Past Elster's Office (uncredited)

David Ahdar
as Priest (uncredited)

Sara Taft
as Nun (uncredited)

Ezelle Poule
as Older mistaken identity (uncredited)

John Benson
as Salesman (uncredited)

Paul Bryar
as Capt. Hansen (uncredited)

Steve Conte
as Burglar (uncredited)

Fred Graham
as Policeman on Rooftop (uncredited)

Forbes Murray
as Diner at Ernie's (uncredited)

Raoul Freeman
as Diner at Ernie's (uncredited)