The Gorilla Man

John Loder

Captain Craig Killian

Ruth Ford

Janet Devon

Marian Hall

Patricia 'Pat' Devon

Richard Fraser

Lieutenant Walter Sibley

Paul Cavanagh

Dr. Dorn

Lumsden Hare

General Randall Devon

John Abbott

Dr. Ferris

Mary Field

Nurse Kruger

Rex Williams

Eric - Male Nurse

Joan Winfield

Mrs. Ellen Tanner

Charles Irwin

Inspector Cady

Peggy Carson

Marie Oliver - the Maid

Walter Tetley

Sammy

Creighton Hale

Constable Fletcher

Frank Mayo

Constable Ryan

Vera Lewis

Landlady (uncredited)