Peter Miller
as Moran
George Wallace
as Bosun
Richard Grant
as Silvers
Morgan Jones
as Nichols
Walter Pidgeon
as Dr. Edward Morbius
Anne Francis
as Altaira Morbius
Jimmy Thompson
as Youngerford
Earl Holliman
as Cook
Jack Kelly
as Lt. Jerry Farman
Richard Anderson
as Chief Engineer Quinn
Robert Dix
as Grey
Warren Stevens
as Lt. "Doc" Ostrow
James Drury
as Joe Strong
Harry Harvey Jr.
as Randall
Roger McGee
as Lindstrom