Gary Sinise
Harry S. Truman
Diana Scarwid
Bess Truman
Richard Dysart
Henry L. Stimson
Colm Feore
Charlie Ross
James Gammon
Sam Rayburn
Tony Goldwyn
Clark Clifford
Pat Hingle
Boss Tom Pendergast
Harris Yulin
Gen. George C. Marshall
Leo Burmester
Frank Vassar
Amelia Campbell
Margaret Truman
Virginia Capers
Elizabeth Moore
John Finn
Bob Hannagan
Zeljko Ivanek
Eddie Jacobsen
David Lansbury
Lt. Jim Pendergast
Remak Ramsay
Dean Acheson
Marian Seldes
Eleanor Roosevelt
Lois Smith
Madge Wallace Gates
Daniel von Bargen
General MacArthur
Winston Churchill
Himself (archive footage) (uncredited)
Lee Richardson
Franklin D. Roosevelt (uncredited)
Harry Gibbs
Vice-President Garner
Jessica Drake
Woman Reporter
Addison Myers
Operator
Michael Murphy
Dinner Speaker (uncredited)
Jason Ray
Soldier (Uncredited)
Nora Denney
Mama Truman