Riven

Bessie Love

as Paula White

Lewis Stone

as Sir John Roxton

Wallace Beery

as Prof. Challenger

Lloyd Hughes

as Edward E. Malone

Alma Bennett

as Gladys Hungerford

Arthur Hoyt

as Prof. Summerlee

Margaret McWade

as Mrs. Challenger

Bull Montana

as Ape Man

Frank Finch Smiles

as Challengers Diener

Jules Cowles

as Zambo

George Bunny

as Colin McArdle

Charles Wellesley

as Maj. Hibbard

Arthur Conan Doyle

as Himself

Virginia Brown Faire

as Marquette

Nelson McDowell

as Lawyer

Gilbert Roland

as Extra

Leo White

as Percy Potts

Marion Fairfax

Screenplay

Cecil Holland

Makeup Artist

Arthur Edeson

Director of Photography

Marcel Delgado

Special Effects

Arthur Conan Doyle

Author

Milton Menasco

Art Direction

Willis H. O'Brien

Special Effects

Harry O. Hoyt

Director

Earl Hudson

Producer

George McGuire

Editor

Perc Westmore

Makeup Artist

Willis H. O'Brien

Visual Effects