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

Colin Kenny

Ad Lib at Church (uncredited)

Bert Stevens

Gentleman (uncredited)

Marjorie Bennett

Cockney with Pipe (uncredited)

Betty Blythe

Lady at Ball (uncredited)

Arthur Tovey

Singer (uncredited)

Marni Nixon

Eliza Doolittle (singing voice) (uncredited)

Al Bain

Cockney (uncredited)

William Beckley

Footman (uncredited)

Lillian Kemble-Cooper

Lady Ambassador (uncredited)

Henry Daniell

Ambassador (uncredited)