Captive Wild Woman

John Carradine Dr. Sigmund Walters

Evelyn Ankers Beth Colman

Milburn Stone Fred Mason

Lloyd Corrigan John Whipple

Fay Helm Nurse Strand

Martha Vickers Dorothy Colman

Acquanetta Paula Dupree, the Ape Woman

Vince Barnett Curly

Paul Fix Gruen

Fred Aldrich Roustabout (uncredited)

Clyde Beatty Fred Mason (in long shots) (archive footage / uncredited)

Turhan Bey End Narrator (voice)(uncredited)

Eddie Borden Dock Spectator (uncredited)

Ray Corrigan Cheela the Gorilla (uncredited)

Russell Custer Curley (uncredited)

Fern Emmett Beth's Murdered Neighbor (uncredited)

Virginia Engels Trapeze Artist (uncredited)

Alexander Gill Waiter (uncredited)

Gus Glassmire Coroner (uncredited)

Joel Goodkind Small Boy (uncredited)