- Steve McQueen
- Det. Lt. Frank Bullitt
- Robert Vaughn
- Walter Chalmers
- Jacqueline Bisset
- Cathy
- Don Gordon
- Det. Delgetti
- Robert Duvall
- Weissberg - Cab Driver
- Simon Oakland
- Captain Sam Bennet
- Norman Fell
- Captain Baker
- Georg Stanford Brown
- Dr. Willard
- Justin Tarr
- Eddy - Defense Lawyer
- Carl Reindel
- Det. Carl Stanton
- Felice Orlandi
- Albert Renick
- Vic Tayback
- Pete Ross
- Robert Lipton
- Chalmers' 1st Aide
- Ed Peck
- Westcott
- Pat Renella
- John Ross
- Paul Genge
- Mike - Hitman
- John Aprea
- Killer
- Al Checco
- Hotel Desk Clerk
- Bill Hickman
- Phil - Hitman's Driver
- Mal Alberts
- Airport Information Agent
- Scott Beach
- Man
- Mary Benoit
- Voice
- Barbara Bosson
- Nurse
- Roger Bowen
- Man
- Joy Carlin
- Woman
- Brandy Carroll
- Mrs. Dorothy Renick
- Joanna Cassidy
- Party Guest
- Julie Christy
- Party Guest
- Robert Cleaves
- Uniformed Courtesy Officer
- Tony Dario
- Cop
- Michael L. Davis
- Policeman
- Jim Demarest
- Captain Brady
- Chuck Dorsett
- Airport Counterman
- Thomas Duncan
- Clerk
- Marjorie Eaton
- Mrs. Larkin
- Walker Edmiston
- Voice
- Sam Edwards
- Voice
- Mimi Fariña
- Woman
- Shirley Fitzgerald
- Mrs. Bennett
- Dick Geary
- Bully Cop
- Frank Gerstle
- (voice) (uncredited)
- Dennis Gribbon
- Tony Bennett, Captain Bennett's Son
- Bob Harks
- Minor Role
- Stacy Harris
- Voice
- Bill Jones
- 2nd Aide
- Stu Klitsner
- Man
- Jean Le Bouvier
- Woman
- Margo Lungreen
- Irene Chalmers
- Larry D. Mann
- Voice
- Claire Merrill
- Mrs. Merrill
- Kathleen Morrissey
- Chalmers' Mother
- Ned Moss
- Senator Dixon
- Vic Perrin
- Voice
- Charlene Polite
- Woman
- Angel Sanchez Jr.
- Kid on Street
- Suzanne Somers
- Woman
- Eron Tabor
- Tourist
- Liz Treadwell
- Woman
- John Vick
- Hospital Policeman
- Erick Vinther
- Street Spectator
- Regina Waldon
- Woman