Svengali

Hildegard Knef

— Trilby O'Farrell

Donald Wolfit

— Svengali

Terence Morgan

— Billy Bagot

Derek Bond

— Landlord

Alfie Bass

— Carrell

Noel Purcell

— Patrick O'Farrell

Jeremy Brett

— Pierre

Paul Rogers

— Taffy

David Kossoff

— Gecko

Hubert Gregg

— Durian

Harry Secombe

— Barizel

Peter Illing

— Police Inspector

Joan Haythorne

— Mrs. Bagot

Hugh Cross

— Dubose

David Oxley

— Dodor

Richard Pearson

— Lambert

Toots Pounds

— Mama Martin

Michael Craig

— Zou Zou

Neville Phillips

— Contran

Martin Boddey

— Doctor

Rica Fox

— Dresser

Joan Heal

— Barmaid

Arnold Bell

— Tout

Cyril Smith

— Stage Manager

Marne Maitland

— Stage Manager

Michael Hordern

— Billy's Uncle

Elisabeth Schwarzkopf

— Trilby O'Ferrall (singing voice)