James Stewart as L.B. 'Jeff' Jefferies

Grace Kelly as Lisa Fremont

Wendell Corey as Det. Lt. Thomas J. Doyle

Thelma Ritter as Stella

Raymond Burr as Lars Thorwald

Judith Evelyn as Miss Lonelyhearts

Ross Bagdasarian as Songwriter

Georgine Darcy as Miss Torso

Sara Berner as Woman on Fire Escape

Frank Cady as Man on Fire Escape

Jesslyn Fax as Miss Hearing Aid

Rand Harper as Newlywed

Irene Winston as Emma Thorwald

Havis Davenport as Newlywed

Jerry Antes as Dancer with Miss Torso (uncredited)

Benny Bartlett as Man with Miss Torso (uncredited)

Sue Casey as Sunbather (uncredited)

Iphigenie Castiglioni as Woman with Bird (uncredited)

James Cornell as Minor Role (uncredited)

Don Dunning as Detective (uncredited)

Marla English as Girl at Songwriter's Party (uncredited)

Bess Flowers as Songwriter's Party Guest with Poodle (uncredited)

Art Gilmore as Radio Announcer (voice) (uncredited)

Fred Graham as Detective (uncredited)

Kathryn Grant as Girl at Songwriter's Party (uncredited)

Charles Harvey as Minor Role (uncredited)

Len Hendry as Policeman (uncredited)

Alfred Hitchcock as Clock-Winder in Songwriter's Apartment (uncredited)

Harry Landers as Man with Miss Lonelyhearts (uncredited)

Alan Lee as Newlyweds' Landlord (uncredited)

Mike Mahoney as Policeman (uncredited)

Jonnie Paris as Sunbather (uncredited)

Eddie Parker as Detective (uncredited)

Robert Sherman as Minor Role (uncredited)

Dick Simmons as Man with Miss Torso (uncredited)

Ralph Smiley as Carl (uncredited)

Jack Stoney as Ice Man (uncredited)

Anthony Warde as Detective (uncredited)

Gig Young as Jeff's Editor (voice) (uncredited)