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

Isobel Elsom

Mrs. Eynsford-Hill

John Holland

Butler

Bert Stevens

Gentleman (uncredited)

Arthur Tovey

Singer (uncredited)

Henry Daniell

Ambassador (uncredited)

Brendan Dillon

Leading Man (uncredited)

John Alderson

Jamie - Doolittle's crony (uncredited)

John McLiam

Harry (uncredited)

John Mitchum

Ad Lib at Church (uncredited)

Alan Napier

Gentleman Escorting Eliza to the Queen (uncredited)

Grady Sutton

Ascot Extra / Guest at Ball (uncredited)

Sam Harris

Guest at Ball (uncredited)