Austin Trevor

Character: Hercule Poirot

Franklin Dyall

Character: Sir Roger Ackroyd

Elizabeth Allan

Character: Ursula Browne

J.H. Roberts

Character: Dr. Sheppard

John Deverell

Character: Lord Halliford

Ronald Ward

Character: Ralph Ackroyd

Mary Jerrold

Character: Mrs. Ackroyd

Mercia Swinburne

Character: Caryll Sheppard

Harvey Braban

Character: Insp. Davis

Clare Greet

Character: (uncredited)

Diana Beaumont

Character: (uncredited)

Earl Grey

Character: (uncredited)