未知土地

Jock Mahoney

Commander Harold 'Alan' Roberts

雪莉·帕特森

Margaret 'Maggie' Hathaway

William Reynolds

Lt. Jack Carmen

Henry Brandon

Dr. Carl Hunter

Douglas Kennedy

Capt. Burnham

Phil Harvey

Machinist's Mate Steve Miller

Kenner G. Kemp

Officer at Briefing / Officer on Ship (uncredited)

賓·羅素

Radio Operator (uncredited)

Bert Stevens

Officer at Briefing (uncredited)

Tom Coleman

Man at Briefing (uncredited)