| Stewart, James |
L. B. Jefferies |
| Kelly, Grace |
Lisa Carol Fremont |
| Corey, Wendell |
Det. Lt. Thomas J. Doyle |
| Ritter, Thelma |
Stella |
| Burr, Raymond |
Lars Thorwald |
| Evelyn, Judith |
Miss Lonelyheart |
| Bagdasarian, Ross |
Songwriter |
| Darcy, Georgine |
Miss Torso |
| Berner, Sara |
Wife living above Thorwalds |
| Cady, Frank |
Husband living above Thorwalds |
| Fax, Jesslyn |
Sculpting neighbor with hearing aid |
| Harper, Rand |
Newlywed man |
| Winston, Irene |
Mrs. Anna Thorwald |
| Davenport, Havis |
Newlywed woman |
| English, Marla |
Girl at songwriter's party |
| Grant, Kathryn |
Girl at songwriter's party (as Kathryn Grandstaff) |
| Lee, Alan |
Newlyweds' landlord |
| Warde, Anthony |
Detective |
| Bartlett, Benny |
Man with Miss Torso |
| Graham, Fred |
Detective |
| Landers, Harry |
Man with Miss Lonelyheart |
| Simmons, Dick |
Man with Miss Torso |
| Castiglioni, Iphigenie |
Woman with bird |
| Smiley, Ralph |
Carl, waiter from 21 |
| Parker, Eddie |
Detective (as Edwin Parker) |
| Hendry, Len |
Policeman |
| Mahoney, Mike |
Policeman |
| Antes, Jerry |
Dancer with Miss Torso (uncredited) |
| Bailey, Barbara |
Choreographer with Miss Torso (uncredited) |
| Borgani, Nick |
(uncredited) |
| Casey, Sue |
(uncredited) |
| Cornell, James |
Man (uncredited) |
| Flowers, Bess |
Songwriter's party guest with poodle (uncredited) |
| Gilmore, Art |
Voice on radio (uncredited) |
| Hitchcock, Alfred |
Man winding clock in songwriter's apartment (uncredited) |
| Paris, Jonni |
(uncredited) |
| Stoney, Jack |
(uncredited) |
