Wendy Hiller

Major Barbara Undershaft

Rex Harrison

Adolphus Cusins

Robert Morley

Andrew Undershaft

Robert Newton

Bill Walker

Sybil Thorndike

The General

Emlyn Williams

Snobby Prince

Marie Lohr

Lady Britomart

Penelope Dudley-Ward

Sarah Undershaft

Walter Hudd

Stephen Undershaft

David Tree

Charles Lomax

Deborah Kerr

Jenny Hill

Donald Calthrop

Peter Shirley

Marie Ault

Rummy Mitchens

Cathleen Cordell

Mog Habbijam

Torin Thatcher

Todger Fairmile

Miles Malleson

Morrison

Felix Aylmer

James

Stanley Holloway

Policeman

S.I. Hsiung

Ling

Kathleen Harrison

Mrs. Price

Mary Morris

A Girl

Charles Victor

Bilton (uncredited)

O.B. Clarence

Pettigrew (uncredited)

Dane Gordon

Cast Member (uncredited)

Edward Rigby

Man on Quayside (uncredited)

George Bernard Shaw

Himself (in theatrical release print only) (uncredited)

Billy Wells

Minor Role (uncredited)