Kevin Costner as Jim Garrison

Tommy Lee Jones as Clay Shaw

Gary Oldman as Lee Harvey Oswald

Kevin Bacon as Willie O'Keefe

Michael Rooker as Bill Broussard

Jack Lemmon as Jack Martin

Laurie Metcalf as Susie Cox

Sissy Spacek as Liz Garrison

Joe Pesci as David Ferrie

John Candy as Dean Andrews

Pruitt Taylor Vince as Lee Bowers

Jay O. Sanders as Lou Ivon

Walter Matthau as Senator Long

Sally Kirkland as Rose Cheramie

Donald Sutherland as X

Ed Asner as Guy Bannister

Brian Doyle-Murray as Jack Ruby

Ray LePere as Zapruder

Vincent D'Onofrio as Bill Newman

Tom Howard as L. B. J.

Lolita Davidovich as Beverly Oliver

Jim Garrison as Earl Warren

Wayne Knight as Numa Bertel

Gary Grubbs as Al Oser

Beata Pozniak as Marina Oswald

Tony Plana as Carlos Bringuier

John William Galt as L. B. J. voice

Ron Jackson as FBI Spokesman

Sean Stone as Jasper Garrison

John S. Davies as Hobo #2

Tomas Milian as Leopoldo

Raul Aranas as Angelo

Gail Cronauer as Janet Williams

Gary Carter as Bill Williams

James N. Harrell as Sam Holland

Ellen McElduff as Jean Hill

Jo Anderson as Julia Ann Mercer

Marco Perella as Mercer Interrogator

Edwin Neal as Mercer Interrogator

Darryl Cox as FBI Agent #2 with Hill

T.J. Kennedy as Hill Interrogator

J.J. Johnston as Mobster with Broussard

R. Bruce Elliott as Bolton Ford Dealer

William Larsen as Will Fritz

Wayne Tippit as FBI Agent - Frank

Dale Dye as General Y

Jerry Douglas as Board Room Man

Ryan MacDonald as Board Room Man

Duane Grey as Board Room Man

George R. Robertson as White House Man

Baxter Harris as White House Man

John Seitz as General Lemnitzer

Alex Rodine as White House Man

Sam Stoneburner as White House Man

Bob Gunton as TV Newsman #3

John Finnegan as Judge Haggerty

Walter Breaux as Vernon Bundy

Melodee Bowman as FBI Receptionist

Peter Maloney as Colonel Finck

Richard Rutowski as Fence Shooter

Bill Bolender as Prisoner Powell

Price Carson as Tippet

Gil Glasgow as Tippet Shooter

Bob Orwig as Officer Poe

Hugh Feagin as Dr. Rose

George Kelly as Jerry Johnson Sidekick

Victor Kempster as Samuel

John Larroquette as Jerry Johnson

Maria Mason as Garrison's Secretary

Ron Rifkin as Mr. Goldberg (Spiesel)

Frank Whaley as Oswald Imposter

Kevin Beard as (uncredited)

Jeffrey Bornstein as Hitman (uncredited)

Marie Del Marco as Secretary in Window (uncredited)

Alan Donnes as Reporter (uncredited)

Orlando Gallegos as Plaza Witness (uncredited)

Robert J. Groden as Courtroom Projectionist (uncredited)

Chuck Kelley as Dallas County Sherriff (uncredited)

Codie Scott as Man in Court (uncredited)

Martin Sheen as Narrator (voice) (uncredited)

John F. Kennedy as Self (archive footage)

Anthony Ramirez as Epileptic

Stanley White as B Team Shooter

Fidel Castro as Self (archive footage)

Jacqueline Kennedy as Self (archive footage)

John Connally as Self (archive footage)

Richmond Hoxie as TV Reporter

Allison Pratt Davis as Elizabeth Garrison

Scott Krueger as Snapper Garrison

Ngô Đình Diệm as Self - Walking with Stick (archive footage)

Agnes Aurelio as D.A. Staff

Gary Taggart as Doctor

E.J. Morris as Plaza Witness #1

Cheryl Penland as Plaza Witness #2

Jim Gough as Plaza Witness #3

Perry R. Russo as Angry Bar Patron

Mike Longman as TV Newsman #1

Ann Strub as Banister's Secretary

Pat Perkins as Mattie

Amy Long as Virginia Garrison

Red Mitchell as Sgt. Harkness

Ronald von Klaussen as Hobo #1

Michael Ozag as Hobo #3

John C. Martin as Prison Guard

Henri Alciatore as Maitre d'

Willem Oltmans as George DeMohrenschildt

Roxie M. Frnka as Earlene Roberts

Zeke Mills as J.C. Price

Ray Redd as Dodd

Sally Nystuen Vahle as Mary Moorman

Spain Logue as FBI Agent #1 with Hill

Carolina McCullough as Stripper

Barry Chambers as Man at Firing Range

Linda Flores Wade as Sylvia Odio

Alec Gifford as TV Newsman #2

Eric A. Vicini as French Reporter

Michael Gurievsky as Russian Reporter

Caroline Crosthwaite-Eyre as British Reporter

Helen Miller as Garrison Receptionist

Harold G. Herthum as Coroner

Norman Davis as Colonel Reich

Errol McLendon as Man with Umbrella

Bruce Gelb as Board Room Man

Nathan Scott as John Chancler

Jorge Fernández as Miguel Torres

Doug Jackson as Stage Manager

Murray Stokes as F.B.I. Agent at Airport

Odin K. Langford as Officer Habighorst

John St. Paul as Airport Police Sergeant

Roy Barnitt as Irvin F. Dymond

Alvin Spicuzza as Bailiff

Carolyn T. Wright as Clinton Witness

Henry Tull III as Clinton Sheriff

Michael Skipper as James Teague

I.D. Brickman as Dr. Peters

Joseph Nadell as Dr. McClelland

Chris Robinson as Dr. Humes

Chris Renna as Bethesda Doctor

Johnny Brink as Roy Truly

David Benn as Kenny O'Donnell

Dalton Dearborn as Army General

Merlyn Sexton as Admiral Kenney

Steve F. Price Jr. as Pathologist #1

Tom Bullock as Pathologist #2

Ruary O'Connell as Pathologist #3

Christopher Kosiciuk as FBI Agent at Autopsy

John Reneau as A Team Shooter

Larry Melton as Patrolman Joe Smith

Carol Farabee as Carolyn Arnold

Willie Minor as Bonnie Ray Williams

Ted Pennebaker as Arnold Rowland

Bill Pickle as Marion Baker

Mykel Chaves as Sandra Styles

Loys T. Bergeron as Jury Foreman

Kristina Hare as Reporter