Rex Harrison

Dr. John Dolittle

Samantha Eggar

Emma Fairfax

Anthony Newley

Matthew Mugg

Richard Attenborough

Albert Blossom

Peter Bull

General Bellowes

Muriel Landers

Mrs. Blossom

William Dix

Tommy Stubbins

Geoffrey Holder

William Shakespeare X

Portia Nelson

Sarah Dolittle

Norma Varden

Lady Fetherington

Frank Baker

Trial Spectator (uncredited)

Edward Cast

Prison Guard (uncredited)

Cyril Cross

Charlie (uncredited)

Peter Crowcroft

Assistant Judge (uncredited)

Jesslyn Fax

Old Woman (uncredited)

Arthur Gould-Porter

Sir Rupert (uncredited)

Lars Hensen

Minor Role (uncredited)

Kendrick Huxham

Elderly Man (uncredited)

Queenie Leonard

Courtroom Spectator (uncredited)

Frank Radcliffe

Strong Man (uncredited)

Jack Raine

Vicar (uncredited)

Danny Rees

Juggler (uncredited)

Angelo Rossitto

Dwarf (uncredited)

Rufus

Dog (uncredited)

Ted Stanhope

Assistant Judge (uncredited)

Gilchrist Stuart

The Vicar (uncredited)

Ginny Tyler

Polynesia (voice) (uncredited)