L.B. 'Jeff' Jefferies
Lisa Fremont
Det. Lt. Thomas J. Doyle
Stella
Lars Thorwald
Miss Lonelyhearts
Songwriter
Miss Torso
Woman on Fire Escape
Man on Fire Escape
Miss Hearing Aid
Newlywed
Emma Thorwald
Dancer with Miss Torso (uncredited)
Man with Miss Torso (uncredited)
Sunbather (uncredited)
Woman with Bird (uncredited)
Minor Role (uncredited)
Detective (uncredited)
Girl at Songwriter's Party (uncredited)
Songwriter's Party Guest with Poodle (uncredited)
Radio Announcer (voice) (uncredited)
Policeman (uncredited)
Clock-Winder in Songwriter's Apartment (uncredited)
Man with Miss Lonelyhearts (uncredited)
Newlyweds' Landlord (uncredited)
Carl (uncredited)
Ice Man (uncredited)
Jeff's Editor (voice) (uncredited)