Boris Karloff

"The Monster"

Colin Clive

"Henry Frankenstein"

Valerie Hobson

"Elizabeth"

Ernest Thesiger

"Doctor Pretorius"

Elsa Lanchester

"Mary Wollstonecraft Shel…"

Gavin Gordon

"Lord Byron"

Douglas Walton

"Percy Bysshe Shelley"

Una O'Connor

"Minnie"

E. E. Clive

"Burgomaster"

Lucien Prival

"Butler"

O. P. Heggie

"Hermit"

Dwight Frye

"Karl"

Reginald Barlow

"Hans"

Mary Gordon

"Hans' Wife"

Anne Darling

"Shepherdess"

Ted Billings

"Ludwig"

Billy Barty

"Baby (uncredited)"

Robert Adair

"Hunter in Woods (uncred…"

Maurice Black

"Gypsy (uncredited)"

Walter Brennan

"Peasant (uncredited)"

John Carradine

"Lost Hunter at Hermit's …"

D'Arcy Corrigan

"Procession Leader (uncre…"

Grace Cunard

"Villager (uncredited)"

Elspeth Dudgeon

"Gypsy's Mother (uncredit…"

Helen Jerome Eddy

"Gypsy's Wife (uncredited)"

Brenda Fowler

"Mother (uncredited)"

John George

"Villager (uncredited)"

Helen Gibson

"Villager (uncredited)"

Marilyn Harris

"Girl (uncredited)"

Carmencita Johnson

"Friend of Murdered Girl …"

Rollo Lloyd

"Neighbor (uncredited)"

Murdock MacQuarrie

"Sympathetic Villager (un…"

Torben Meyer

"Victim in flashback (unc…"

Edwin Mordant

"Coroner (uncredited)"

Charles Murphy

"Guard (uncredited)"

Helen Parrish

"Communion Girl (uncredit…"

Edward Peil Sr.

"Villager (uncredited)"

Tempe Pigott

"Auntie Glutz (uncredited)"

Mary Stewart

"Neighbor (uncredited)"

Frank Terry

"Lost Hunter at Hermit's …"

Dorothy Vernon

"Maid (uncredited)"

Joan Woodbury

"Queen Homunculus (uncred…"