Unknown Island

Virginia Grey

Carole Lane

Phillip Reed

Ted Osborne

Richard Denning

John Fairbanks

Barton MacLane

Capt. Tarnowski

Dick Wessel

Sanderson, 1st Mate

Dan White

Crewman Edwards

Harry 'Snub' Pollard

Extra in Dive, Pointing Out Tarnowski

Ray Corrigan

Monster (uncredited)

Robert Priestley

Set Decoration

Harry Gerstad

Editor

Ellis Burman

Special Effects

Raoul Kraushaar

Original Music Composer

Jerome Pycha Jr.

Art Direction

Fred Jackman Jr.

Director of Photography

Jack Bernhard

Director

Albert J. Cohen

Producer

Jack Harvey

Screenplay

Robert T. Shannon

Story, Screenplay

Rudolph E. Abel

Production Manager

Harry Ross

Makeup Supervisor

Max M. Hutchinson

Sound

John Livesley

Grip

Maria Marsha

Hairstylist