Gene Hackman (Jimmy Doyle), Roy Scheider (Buddy Russo), Fernando Rey (Alain Charnier), Tony Lo Bianco (Sal Boca), Marcel Bozzuffi (Pierre Nicoli), Frédéric de Pasquale (Devereaux), Bill Hickman (Mulderig) more..., Ann Rebbot (Marie Charnier), Harold Gary (Weinstock), Arlene Farber (Angie Boca), Eddie Egan (Simonson), André Ernotte (La Valle), Sonny Grosso (Klein), Benny Marino (Lou Boca), Patrick McDermott (Chemist), Alan Weeks (Pusher), Al Fann (Informant), Irving Abrahams (Police Mechanic), Randy Jurgensen (Police Sergeant), William Coke (Motorman), Charles McGregor ("Baldy" (uncredited))

Ernest Tidyman (Screenplay), Philip D'Antoni (Producer), Owen Roizman (Director of Photography), Ben Kasazkow (Art Direction), Edward Garzero (Set Decoration), Gerald B. Greenberg (Editor), Chris Newman (Sound) more..., Eddie Egan (Other), William Ward (Electrician), G. David Schine (Executive Producer), Kenneth Utt (Associate Producer), Joseph Fretwell III (Costume Design), Irving Buchman (Makeup Artist), Terence A. Donnelly (Assistant Director), William C. Gerrity (Assistant Director), Sass Bedig (Special Effects), Bill Hickman (Stunt Coordinator), Nicholas Sgarro (Script Supervisor), Robin Moore (Book), Theodore Soderberg (Sound), Paul Ganapoler (Unit Production Manager), Robert Weiner (Casting), Don Ellis (Conductor), Don Ellis (Original Music Composer), Norman Gay (Associate Editor), Robert Ward (Key Grip), Enrique Bravo (Camera Operator), Thomas Wright (Property Master), Fat Thomas (Other), Joseph W. Dehn (Wardrobe Supervisor), Florence Foy (Wardrobe Supervisor), Hal Needham (Stunts), Carey Loftin (Stunt Driver), Bill Hickman (Stunt Double), Fred J. Lincoln (Stunts), Alex Stevens (Stunts), Jerry Summers (Stunt Driver), Joe Finnegan (Stunts), Cliff Cudney (Stunts), George Fisher (Stunts) and others.