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

Tom Howard

Lyndon B. Johnson

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)

Ron Jackson

FBI Spokesman

Sean Stone

Jasper Garrison

John S. Davies

Hobo #2

Tomas Milian

Leopoldo

Raul Aranas

Angelo

Gail Cronauer

Janet Williams

Gary Carter

Bill Williams

James N. Harrell

Sam Holland

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

William Larsen

Will Fritz

Wayne Tippit

FBI Agent - Frank

Dale Dye

General Y

Jerry Douglas

Board Room Man

Ryan MacDonald

Board Room Man

Duane Grey

Board Room Man

George R. Robertson

White House Man

Baxter Harris

White House Man

John Seitz

General Lemnitzer

Alex Rodine

White House Man

Sam Stoneburner

White House Man

Bob Gunton

TV Newsman #3

John Finnegan

Judge Haggerty

Walter Breaux

Vernon Bundy

Peter Maloney

Colonel Finck

Richard Rutowski

Fence Shooter

Bill Bolender

Prisoner Powell

Price Carson

Tippet

Gil Glasgow

Tippet Shooter

Bob Orwig

Officer Poe

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)

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)

Kevin Beard

(uncredited)

Jeffrey Bornstein

Hitman (uncredited)

Marie Del Marco

Secretary in Window (uncredited)

Robert J. Groden

Courtroom Projectionist (uncredited)

Martin Sheen

Narrator (voice) (uncredited)

John F. Kennedy

Self (archive footage)

Stanley White

B Team Shooter

Fidel Castro

Self (archive footage)

Jacqueline Kennedy

Self (archive footage)

Richmond Hoxie

TV Reporter

Ngô Đình Diệm

Self - Walking with Stick (archive footage)