Boris Karloff (The Monster)
Colin Clive (Henry Frankenstein)
Valerie Hobson (Elizabeth Frankenstein)
Elsa Lanchester (Mary Shelley/The Bride)
Ernst Thesiger (Dr. Septimus Pretorius)
Dwight Frye (Karl)
Monte Montague (King)
Helen Parrish (Girl)
Tempe Piggott (Auntie Glutz)
Lucien Prival (Otto)
Lucio Villegas (Priest)
Douglas Walton (Percy Bysshe Shelley)
Joan Woodbury (Queen)
Peter Shaw (Devil)
Edwin Mordant (Coroner)
Josephine McKim (Mermaid)
Norman Ainsley (Archbishop)
Reginald Barlow (Hans)
Billy Barty (Baby)
Ted Billings (Ludwig)
Walter Brennan (Neighbor)
John Carradine (Huntsman)
Grace Cunard (Woman)
Anne Darling (Shepherdess)
Gunnis Davis (Uncle Glutz)
Kansas de Forest (Ballerina)
Neil Fitzgerald (Rudy)
Helen Gibson (Woman)
Gavin Gordon (Lord Byron)
Mary Gordon (Hans's Wife)
O.P. Heggie (The Hermit)
E.E. Clive (Burgomaster)
Una O'Connor (Minnie)