Bessie Love

Paula White

Lewis Stone

Sir John Roxton

Wallace Beery

Prof. Challenger

Lloyd Hughes

Edward E. Malone

Alma Bennett

Gladys Hungerford

Arthur Hoyt

Prof. Summerlee

Margaret McWade

Mrs. Challenger

Bull Montana

Ape Man

Jules Cowles

Zambo

Arthur Conan Doyle

Himself

Virginia Brown Faire

Marquette

Nelson McDowell

Lawyer

Gilbert Roland

Extra

Leo White

Percy Potts