Audrey Hepburn (Eliza Doolittle),
Theodore Bikel (Zoltan Karpathy),
Rex Harrison (Professor Henry Higgins),
Al Bain (Cockney (uncredited)),
Frank Baker (Gentleman (uncredited)),
William Beckley (Footman (uncredited)),
Marjorie Bennett (Cockney with Pipe (uncredited)),
Betty Blythe (Lady at Ball (uncredited)),
Jeremy Brett (Freddy Eynsford-Hill),
Gladys Cooper (Mrs. Higgins),
Isobel Elsom (Mrs. Eynsford-Hill),
John Holland (Butler),
Stanley Holloway (Alfred P. Doolittle),
Wilfrid Hyde-White (Colonel Hugh Pickering),
Lillian Kemble-Cooper (Lady Ambassador (uncredited)),
Colin Kenny (Ad Lib at Church (uncredited)),
Marni Nixon (Eliza Doolittle (singing voice) (uncredited)),
Bert Stevens (Gentleman (uncredited)),
Arthur Tovey (Singer (uncredited)),
Mona Washbourne (Mrs. Pearce)