- Sean Connery
- Robert 'Duke' Anderson
- Dyan Cannon
- Ingrid Everly
- Martin Balsam
- Tommy Haskins
- Ralph Meeker
- Captain Delaney
- Alan King
- Pat Angelo
- Christopher Walken
- The Kid
- Val Avery
- Rocco Parelli
- Dick Anthony Williams
- Edward Spencer
- Garrett Morris
- Sergeant Everson
- Stan Gottlieb
- William 'Pop' Meyerhoff
- Paul Benjamin
- Jimmy
- Anthony Holland
- Psychologist
- Richard B. Shull
- Werner Gottlieb
- Conrad Bain
- Dr. Rubicoff
- Margaret Hamilton
- Miss Kaler
- Judith Lowry
- Mrs. Hathaway
- Max Showalter
- Carl Bingham
- Janet Ward
- Mrs. Bingham
- Scott Jacoby
- Jerry Bingham
- Norman Rose
- Mr. Longene
- Meg Myles
- Mrs. Longene
- John Call
- O'Leary - Doorman
- Raoul Kraushaar
- Vic D'Medico - Angelo's Lawyer
- John Braden
- Vanessi
- Paula Trueman
- Dr. Rubicoff's Nurse
- Michael Miller
- First Agent
- Michael Prince
- Vincent Johnson
- Frank Macetta
- Papa Angelo
- Jack Doroshow
- Eric - Decorator Tenant
- Michael Clary
- Eric's Friend
- Hildy Brooks
- Tommy's Receptionist
- Robert Dagny
- Doctor
- Bradford English
- T.V. Watcher
- Reid Cruickshanks
- Judge
- Tom Signorelli
- Sync Man - State Narcotics Commission
- Carmine Caridi
- Detective A
- Michael Fairman
- Sergeant Claire
- George Patelis
- Detective B
- William J. Daprato
- Detective C
- Sam Coppola
- Private Detective
- Mary Boylan
- Bus Station Lady
- Bruce Brown
- Policeman
- James Forster
- Sergeant
- Charles Frank
- Ambulance Attendant
- Ron Gilbert
- Police Officer
- Al Kirk
- Thief
- Joseph Leon
- Minor Role
- Helen Martin
- Minor Role
- Tom Nobles
- Police Lieutenant
- George Strus
- Minor Role
