Burt Lancaster

Gen. James Mattoon Scott

Kirk Douglas

Col. Martin "Jiggs" Casey

Fredric March

President Jordan Lyman

Ava Gardner

Eleanor Holbrook

Edmond O'Brien

Sen. Raymond Clark

Martin Balsam

Paul Girard

Andrew Duggan

Col. William "Mud" Henderson

Hugh Marlowe

Harold McPherson

Whit Bissell

Sen. Frederick Prentice

Helen Kleeb

Esther Townsend

George Macready

Christopher Todd

Richard Anderson

Col. Murdock

Bart Burns

Secret Service White House Chief Art Corwin

Malcolm Atterbury

Horace the White House Physician (uncredited)

Walter Bacon

Reporter (uncredited)

Al Bain

Reporter (uncredited)

Bill Baldwin

Announcer (voice) (uncredited)

John Barton

Reporter (uncredited)

Jack Berle

Reporter (uncredited)

Robert Brubaker

Gen. Diefenbach (uncredited)

William Challee

Gen. Riley (uncredited)

Dick Cherney

Reporter (uncredited)

Harry Denny

Party Guest (uncredited)

Mimi Dillard

Mother at Dulles Airport (uncredited)

Alphonso DuBois

Reporter (uncredited)

Wesley Gale

Reporter (uncredited)

Chuck Hamilton

Reporter (uncredited)

Stuart Holmes

Senate Committee Member (uncredited)

John Houseman

Vice Adm. Farley C. Barnswell (uncredited)

Rodolfo Hoyos Jr.

Capt. Ortega (uncredited)

Clegg Hoyt

Diner Operator (uncredited)

Colette Jackson

Bar Girl (uncredited)

Kenner G. Kemp

Senate Committee Member (uncredited)

John Larkin

Col. Broderick (uncredited)

Kent McCord

Presidential Aide (uncredited)

Tyler McVey

Gen. Hardesty (uncredited)

William Meader

Reporter (uncredited)

Charles Meredith

Senate Committee Member (uncredited)

Ernesto Molinari

Reporter (uncredited)

Jack Mullaney

Lt. Dorsey Grayson (uncredited)

Joe Ploski

Reporter (uncredited)

José Portugal

Party Guest (uncredited)

Fred Rapport

Party Guest (uncredited)

Ron Rich

Reporter (uncredited)

Norman Stevans

Senate Commitee Member (uncredited)

Charles Watts

Stewart Dillard (uncredited)

Fredd Wayne

Henry Whitney (uncredited)

Ferris Webster

Gen. Bernard "Barney" Rutkowski (uncredited)