J. Carrol Naish

Dr. Duryea alias Frankenstein

Lon Chaney Jr.

Groton

Zandor Vorkov

Count Dracula

Anthony Eisley

Mike Howard

Regina Carrol

Judith

Russ Tamblyn

Rico

Jim Davis

Sgt. Martin

John Bloom

The Monster

Greydon Clark

Strange

Angelo Rossitto

Grazbo the Evil Dwarf

Forrest J. Ackerman

Dr. Beaumont

Maria Lease

Joan

Bruce Kimball

Biker (uncredited)

Albert Cole

Cop Killed by Creature (uncredited)

Gary Kent

Bob, Beach Boy (uncredited)