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