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)
Phyllis Coghlan
Courtroom Spectator (uncredited)
Cyril Cross
Charlie (uncredited)
Peter Crowcroft
Assistant Judge (uncredited)
John Dolan
Fisherman (uncredited)
Jesslyn Fax
Old Woman (uncredited)
Arthur Gould-Porter
Sir Rupert (uncredited)
Eric Heath
Courtroom Spectator (uncredited)
Lars Hensen
Minor Role (uncredited)
Kendrick Huxham
Elderly Man (uncredited)
Theron Jackson
Boy (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)
Geoffrey Steele
Courtroom Spectator (uncredited)
Gilchrist Stuart
The Vicar (uncredited)
Ginny Tyler
Polynesia (voice) (uncredited)
Bob Winters
Juggler (uncredited)
Judy Chapman
Dancer (uncredited)