Vivien Leigh

Character: Emma, Lady Hamilton

Laurence Olivier

Character: Lord Horatio Nelson

Alan Mowbray

Character: Sir William Hamilton

Sara Allgood

Character: Mrs. Cadogan-Lyon

Gladys Cooper

Character: Lady Francis Nelson

Henry Wilcoxon

Character: Captain Hardy

Heather Angel

Character: Mary Smith

Halliwell Hobbes

Character: Rev. Nelson

Gilbert Emery

Character: Lord Spencer

Miles Mander

Character: Lord Keith

Ronald Sinclair

Character: Josiah

Luis Alberni

Character: King of Naples

Norma Drury

Character: Queen of Naples

Olaf Hytten

Character: Gavin

Juliette Compton

Character: Lady Spencer

Guy Kingsford

Character: Captain Troubridge

Leonard Carey

Character: Orderly (uncredited)

Alec Craig

Character: Ship's Minister (uncredited)

George Davis

Character: Gendarme (uncredited)

Payne B. Johnson

Character: Boy (uncredited)

Russ Powell

Character: Servant (uncredited)

Georges Renavent

Character: Hotel Manager (uncredited)

Harry Strang

Character: Ship's Medic (uncredited)