The Underwater City

Roy Roberts

Major Carson

Kathie Browne

Dotty Steele

Karen Norris

Phyllis Gatewood

Edmund Cobb

Meade (uncredited)

Chet Douglas

Chuck Marlow

Paul Power

Author in Visiting Party (uncredited)

Julie Adams

Kay Lawrence

George DeNormand

Dr. Carl Wendt (uncredited)

Carl Benton Reid

Mr. Christy

Edward Mallory

Lt. Wally Steele

Paul Dubov

Jason (uncredited)

William Lundigan

Michael Moynihan