 Audrey HepburnEliza Doolittle | Eliza Doolittle |
 Rex HarrisonProfessor Henry Higgins | Professor Henry Higgins |
 Stanley HollowayAlfred P. Doolittle | Alfred P. Doolittle |
 Wilfrid Hyde-WhiteColonel Hugh Pickering | Colonel Hugh Pickering |
 Gladys CooperMrs. Higgins | Mrs. Higgins |
 Jeremy BrettFreddy Eynsford-Hill | Freddy Eynsford-Hill |
 Theodore BikelZoltan Karpathy | Zoltan Karpathy |
 Mona WashbourneMrs. Pearce | Mrs. Pearce |
 Isobel ElsomMrs. Eynsford-Hill | Mrs. Eynsford-Hill |
 John HollandButler | Butler |
 Marni NixonEliza Doolittle (singing voice) (uncredited) | Eliza Doolittle (singing voice) (uncredited) |
 Colin KennyAd Lib at Church (uncredited) | Ad Lib at Church (uncredited) |
| BBert StevensGentleman (uncredited) | Gentleman (uncredited) |
 Frank BakerGentleman (uncredited) | Gentleman (uncredited) |
 Marjorie BennettCockney with Pipe (uncredited) | Cockney with Pipe (uncredited) |
 Betty BlytheLady at Ball (uncredited) | Lady at Ball (uncredited) |
 Arthur ToveySinger (uncredited) | Singer (uncredited) |
 Al BainCockney (uncredited) | Cockney (uncredited) |
 William BeckleyFootman (uncredited) | Footman (uncredited) |
 Lillian Kemble-CooperLady Ambassador (uncredited) | Lady Ambassador (uncredited) |
 Henry DaniellAmbassador (uncredited) | Ambassador (uncredited) |
 Brendan DillonLeading Man (uncredited) | Leading Man (uncredited) |
| IIris BristolFlower Girl (uncredited) | Flower Girl (uncredited) |
| GGeoffrey SteeleTaxi Driver (uncredited) | Taxi Driver (uncredited) |
 Charles FredericksKing George V (uncredited) | King George V (uncredited) |
 Maurice DallimoreSelsey Man (uncredited) | Selsey Man (uncredited) |
 John AldersonJamie - Doolittle's crony (uncredited) | Jamie - Doolittle's crony (uncredited) |
 John McLiamHarry (uncredited) | Harry (uncredited) |
 John MitchumAd Lib at Church (uncredited) | Ad Lib at Church (uncredited) |
 Alan NapierGentleman Escorting Eliza to the Queen (uncredited) | Gentleman Escorting Eliza to the Queen (uncredited) |
