- Kevin Spacey
- Jack Vincennes
- Russell Crowe
- Officer Wendell 'Bud' White
- Guy Pearce
- Det. Lt. Edmund Jennings Exley
- James Cromwell
- Capt. Dudley Liam Smith
- David Strathairn
- Pierce Morehouse Patchett
- Kim Basinger
- Lynn Bracken
- Danny DeVito
- Sid Hudgens
- Graham Beckel
- Sgt. Richard Alex 'Dick' Stensland
- Simon Baker
- Matt Reynolds
- Matt McCoy
- Brett Chase
- John Mahon
- Police Chief
- Paul Guilfoyle
- Meyer Harris 'Mickey' Cohen
- Ron Rifkin
- Dist. Atty. Ellis Loew
- Paolo Seganti
- Johnny Stompanato
- Amber Smith
- Susan Lefferts
- Gwenda Deacon
- Mrs. Lefferts
- Curtis Hanson
- Director, Producer, Writer
- James Ellroy
- Writer
- Brian Helgeland
- Writer
- Dan Kolsrud
- Executive Producer
- David L. Wolper
- Executive Producer
- Michael G. Nathanson
- Producer
- Arnon Milchan
- Producer
- Jerry Goldsmith
- Original Music
- Dante Spinotti
- Cinematographer
- Peter Honess
- Film Editing
- Mali Finn
- Casting
- Jeannine Oppewall
- Production Design
- William Arnold
- Art Director
- Jay Hart
- Set Decoration
- Ruth Myers
- Costume Design
