Kevin Costner character Jim Garrison
Tommy Lee Jones character Clay Shaw/Clay Bertrand
Gary Oldman character Lee Harvey Oswald
Kevin Bacon character Willie O'Keefe
Michael Rooker character Bill Broussard
Jack Lemmon character Jack Martin
Laurie Metcalf character Susie Cox
Sissy Spacek character Liz Garrison
Joe Pesci character David Ferrie
John Candy character Dean Andrews
Pruitt Taylor Vince character Lee Bowers
Jay O. Sanders character Lou Ivon
Walter Matthau character Senator Long
Sally Kirkland character Rose Cheramie
Donald Sutherland character X
Edward Asner character Guy Bannister
Brian Doyle-Murray character Jack Ruby
Ray LePere character Abraham Zapruder
Vincent D'Onofrio character Bill Newman
Tom Howard character Lyndon B. Johnson
Lolita Davidovich character Beverly Oliver
Jim Garrison character Earl Warren
Wayne Knight character Numa Bertel
Gary Grubbs character Al Oser
Beata Pozniak character Marina Oswald
Tony Plana character Carlos Bringuier
John William Galt character L.B.J. (voice)
Ron Jackson character FBI Spokesman
Sean Stone character Jasper Garrison
John S. Davies character Hobo #2
Tomás Milián character Leopoldo
Raul Aranas character Angelo
Gail Cronauer character Janet Williams
Gary Carter character Bill Williams
James N. Harrell character Sam Holland
Ellen McElduff character Jean Hill
Jo Anderson character Julia Ann Mercer
Marco Perella character Mercer Interrogator
Edwin Neal character Mercer Interrogator
Darryl Cox character FBI Agent #2 with Hill
T.J. Kennedy character Hill Interrogator
J.J. Johnston character Mobster with Broussard
R. Bruce Elliott character Bolton Ford Dealer
William Larsen character Will Fritz
Wayne Tippit character FBI Agent - Frank
Dale Dye character General Y
Jerry Douglas character Board Room Man
Ryan MacDonald character Board Room Man
Duane Grey character Board Room Man
George R. Robertson character White House Man
Baxter Harris character White House Man
John Seitz character General Lemnitzer
Alex Rodine character White House Man
Sam Stoneburner character White House Man
Bob Gunton character TV Newsman #3
John P. Finnegan character Judge Haggerty
Walter Breaux character Vernon Bundy
Melodee Bowman character FBI Receptionist
Peter Maloney character Colonel Finck
Richard Rutowski character Fence Shooter
Bill Bolender character Prisoner Powell
Price Carson character Tippet
Gil Glasgow character Tippet Shooter
Bob Orwig character Officer Poe
Hugh Feagin character Dr. Rose (credited on Director's Cut)
George Kelly character Jerry Johnson's Sidekick (credited on Director's Cut)
Victor Kempster character Samuel (credited on Director's Cut)
John Larroquette character Jerry Johnson (credited on Director's Cut)
Maria Mason character Garrison's Secretary (credited in Director's Cut)
Ron Rifkin character Mr. Goldberg / Spiesel (credited on Director's Cut)
Frank Whaley character Oswald Imposter (credited on Director's Cut)
Kevin Beard character (uncredited)
Jeffrey Bornstein character Hitman (uncredited)
Marie Del Marco character Secretary in Window (uncredited)
Alan Donnes character Reporter (uncredited)
Orlando Gallegos character Plaza Witness (uncredited)
Robert J. Groden character Courtroom Projectionist (uncredited)
Chuck Kelley character Dallas County Sherriff (uncredited)
Codie Scott character Man in Court (uncredited)
Martin Sheen character Narrator (voice) (uncredited)
Jacquelyn Twodat Jackson character Restaurant diner (uncredited)
John F. Kennedy character Himself (archive footage)
