Walter Pidgeon

Dr. Edward Morbius

Anne Francis

Altaira Morbius

Leslie Nielsen

Commander John J. Adams

Warren Stevens

Lt. 'Doc' Ostrow

Jack Kelly

Lt. Jerry Farman

Earl Holliman

Cookie

Richard Anderson

Chief Engineer Quinn

George D. Wallace

Bosun

Robert Dix

Crewman Grey

Jimmy Thompson

Crewman Youngerford