Tippi Hedren as Marnie Edgar

Sean Connery as Mark Rutland

Diane Baker as Lil Mainwaring

Martin Gabel as Sidney Strutt

Louise Latham as Bernice Edgar

Bob Sweeney as Cousin Bob

Milton Selzer as Man at Track

Mariette Hartley as Susan Clabon

Alan Napier as Mr. Rutland

Bruce Dern as Sailor

Henry Beckman as First Detective

S. John Launer as Sam Ward

Edith Evanson as Rita

Meg Wyllie as Mrs. Turpin

Leon Alton as Party Guest (uncredited)

John Alvin as Hotel Chauffeur (uncredited)

Kimberly Beck as Jessie Cotton (uncredited)

Lillian Bronson as Mrs. Maitland (uncredited)

George Bruggeman as Racetrack Patron (uncredited)

Linden Chiles as Office Worker (uncredited)

Rupert Crosse as Office Worker (uncredited)

Harold Gould as Mr. Garrett (uncredited)

John Hart as Dr. Gilliat (uncredited)

Alfred Hitchcock as Man Leaving Hotel Room (uncredited)

Kenner G. Kemp as Party Guest (uncredited)

Caryl Lincoln as Party Guest (uncredited)

Louise Lorimer as Mrs. Strutt (uncredited)

Milton Parsons as Bald Man (uncredited)

Carmen Phillips as Sidney Strutt's Secretary (uncredited)

Murray Pollack as Husband (uncredited)

Paul Power as Racetrack Patron (uncredited)

Greg Rhinelander as Party Guest (uncredited)

Mark Russell as Party Guest (uncredited)

Melody Thomas Scott as Young Marnie (uncredited)

Bert Stevens as Party Guest (uncredited)

Hal Taggart as Racetrack Patron (uncredited)

Tim Taylor as Party Guest (uncredited)

Luree Wiese as Party Guest (uncredited)

Emmaline Henry as Minor role (uncredited)

Bryan O'Byrne as Rutland Doorman (uncredited)

Pearl Shear as Woman in Restroom (uncredited)

Charles Thompson as Party Guest Charlie (uncredited)