James Stewart
L.B. 'Jeff' Jefferies

Grace Kelly
Lisa Fremont

Wendell Corey
Det. Lt. Thomas J. Doyle

Thelma Ritter
Stella

Raymond Burr
Lars Thorwald

Judith Evelyn
Miss Lonelyhearts

Ross Bagdasarian
Songwriter

Georgine Darcy
Miss Torso

Sara Berner
Woman on Fire Escape

Frank Cady
Man on Fire Escape

Jesslyn Fax
Miss Hearing Aid

Irene Winston
Emma Thorwald

Jerry Antes
Dancer with Miss Torso (uncredited)

Benny Bartlett
Man with Miss Torso (uncredited)

Sue Casey
Sunbather (uncredited)

Iphigenie Castiglioni
Woman with Bird (uncredited)

Marla English
Girl at Songwriter's Party (uncredited)

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

Art Gilmore
Radio Announcer (voice) (uncredited)

Fred Graham
Detective (uncredited)

Kathryn Grant
Girl at Songwriter's Party (uncredited)

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

Harry Landers
Man with Miss Lonelyhearts (uncredited)

Mike Mahoney
Policeman (uncredited)

Eddie Parker
Detective (uncredited)

Dick Simmons
Man with Miss Torso (uncredited)

Jack Stoney
Ice Man (uncredited)

Anthony Warde
Detective (uncredited)

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