Kevin Costner

as Jim Garrison

Born 01/18/1955, age

Tommy Lee Jones

as Clay Shaw / Clay Bertrand

Born 09/15/1946, age

Gary Oldman

as Lee Harvey Oswald

Born 03/21/1958, age

Kevin Bacon

as Willie O'Keefe

Born 07/08/1958, age

Michael Rooker

as Bill Broussard

Born 04/06/1955, age

Jack Lemmon

as Jack Martin

Born 02/08/1925

Died 06/27/2001, age

Laurie Metcalf

as Susie Cox

Born 06/16/1955, age

Sissy Spacek

as Liz Garrison

Born 12/25/1949, age

Joe Pesci

as David Ferrie

Born 02/09/1943, age

John Candy

as Dean Andrews

Born 10/30/1950

Died 03/03/1994, age

Pruitt Taylor Vince

as Lee Bowers

Born 07/05/1960, age

Jay O. Sanders

as Lou Ivon

Born 04/16/1953, age

Walter Matthau

as Senator Long

Born 10/01/1920

Died 07/01/2000, age

Sally Kirkland

as Rose Cheramie

Born 10/31/1941, age

Donald Sutherland

as X

Born 07/17/1935, age

Ed Asner

as Guy Bannister

Born 11/15/1929

Died 08/29/2021, age

Brian Doyle-Murray

as Jack Ruby

Born 10/31/1945, age

Vincent D'Onofrio

as Bill Newman

Born 06/30/1959, age

Lolita Davidovich

as Beverly Oliver

Born 07/15/1961, age

Wayne Knight

as Numa Bertel

Born 08/07/1955, age

Gary Grubbs

as Al Oser

Born 11/14/1949, age

Tony Plana

as Carlos Bringuier

Born 04/19/1952, age

Tomas Milian

as Leopoldo

Born 03/03/1932

Died 03/22/2017, age

Jo Anderson

as Julia Ann Mercer

Born 06/29/1958, age

J.J. Johnston

as Mobster with Broussard

Born 10/24/1933, age

Dale Dye

as General Y

Born 10/08/1944, age

John Seitz

as General Lemnitzer

Born 11/16/1937

Died 07/04/2005, age

Bob Gunton

as TV Newsman #3

Born 11/15/1945, age

John Finnegan

as Judge Haggerty

Born 08/18/1926

Died 07/29/2012, age

John Larroquette

as Jerry Johnson (credited in Director's Cut)

Born 11/25/1947, age

Ron Rifkin

as Mr. Goldberg / Spiesel (credited in Director's Cut)

Born 10/31/1939, age

Frank Whaley

as Oswald Imposter (credited in Director's Cut)

Born 07/20/1963, age

Martin Sheen

as Narrator (voice) (uncredited)

Born 08/03/1940, age