Al Pacino as Sonny

John Cazale as Sal

Charles Durning as Moretti

Chris Sarandon as Leon

James Broderick as Sheldon

Penelope Allen as Sylvia

Sully Boyar as Mulvaney

Beulah Garrick as Margaret

Carol Kane as Jenny

Sandra Kazan as Deborah

Marcia Jean Kurtz as Miriam

Amy Levitt as Maria

John Marriott as Howard

Estelle Omens as Edna

Gary Springer as Stevie

Carmine Foresta as Carmine

Lance Henriksen as Murphy

Floyd Levine as Phone Cop

Dick Anthony Williams as Limo Driver

Dominic Chianese as Father

Marcia Haufrecht as Neighbor

Judith Malina as Mother

Susan Peretz as Angie

William Bogert as TV Anchorman

Ron Cummins as TV Reporter

Jay Gerber as Sam

Philip Charles MacKenzie as Doctor

Chu Chu Malave as Maria's Boyfriend

Lionel Pina as Pizza Boy

Robert Costanzo as New York Policeman (uncredited)

Ron Gilbert as Detective (uncredited)

Kenneth McMillan as Commissioner (uncredited)

Ed Metzger as Sgt. Murray (uncredited)

Lynette Sheldon as Sadie (uncredited)

Alan Berger as Lout (uncredited)

James Bulleit as Sgt. Gillis (uncredited)

Todd Everett as Cop (uncredited)

Raymond Serra as New York Plainclothes Cop (uncredited)

Tom Towles as Cop (uncredited)