Frank Sinatra
Capt./Maj. Bennett Marco
Laurence Harvey
Raymond Shaw
Angela Lansbury
Mrs. Iselin
Janet Leigh
Eugenie Rose Chaney
James Gregory
Sen. John Yerkes Iselin
Henry Silva
Chunjin
Leslie Parrish
Jocelyn Jordan
John McGiver
Sen. Thomas Jordan
Khigh Dhiegh
Dr. Yen Lo
James Edwards
Cpl. Allen Melvin
Douglas Henderson
Col. Milt
Albert Paulsen
Zilkov
Barry Kelley
Secretary of Defense
Lloyd Corrigan
Holborn Gaines
Madame Spivy
Female Berezovo
Bess Flowers
Gomel's Lady Counterpart (uncredited)
Leoda Richards
Woman at Press Confrence (uncredited)
Colin Kenny
Senator (uncredited)
Bert Stevens
Officer
Arthur Tovey
Second Reporter
Paul Frees
Narrator (voice)
Whit Bissell
Medical Officer
James Yagi
Chinese Officer (uncredited)
Tom Lowell
Pvt. Bobby Lembeck (uncredited)
Joe Adams
Psychiatrist
Merritt Bohn
Jilly
Robert Riordan
Benjamin K. Arthur