Audrey Hepburn

Eliza Doolittle

Rex Harrison

Professor Henry Higgins

Stanley Holloway

Alfred P. Doolittle

Wilfrid Hyde-White

Colonel Hugh Pickering

Gladys Cooper

Mrs. Higgins

Jeremy Brett

Freddy Eynsford-Hill

Theodore Bikel

Zoltan Karpathy

Mona Washbourne

Mrs. Pearce

Isobel Elsom

Mrs. Eynsford-Hill

John Holland

Butler

Marni Nixon

Eliza Doolittle (singing voice) (uncredited)

Colin Kenny

Ad Lib at Church (uncredited)