Marlon Brando
Major Lloyd Gruver

Patricia Owens
Eileen Webster

James Garner
Capt. Mike Bailey

Martha Scott
Mrs. Webster

Miiko Taka
Hana-ogi

Miyoshi Umeki
Katsumi

Red Buttons
Joe Kelly

Kent Smith
Gen. Webster

Douglass Watson
Col. Craford

Reiko Kuba
Fumiko-san

Soo Yong
Terukosan

Ricardo Montalban
Nakamura

Dennis Hopper
MP in Kelly's House / MP at Tokyo Airport (voice) (uncredited)

Peter Brown
Second Military Police (voice) (uncredited)

Kenner G. Kemp
General at Tokyo Airport (uncredited)

William Meader
General at Tokyo Airport (uncredited)

Ralph Moratz
Soldier in Washroom (uncredited)

Rollin Moriyama
Reporter (uncredited)

Yvonne Peattie
Lady Vice-Consul (uncredited)

Phil Rhodes
Doctor (uncredited)