Tarantula

John Agar

Dr. Matt Hastings

Mara Corday

Stephanie 'Steve' Clayton

Leo G. Carroll

Prof. Gerald Deemer

Nestor Paiva

Sheriff Jack Andrews

Ross Elliott

Joe Burch

Hank Patterson

Josh

Eddie Parker

Paul Lund / Eric Jacobs / Airport Workman

Bert Holland

Barney Russell

Raymond Bailey

Dr. Townsend

Steve Darrell

Andy Andersen

?

Edwin Rand

Lt. John Nolan

?

Wag Blesing

Townsman

Clint Eastwood

Jet Squadron Leader (uncredited)

?

Dee Carroll

Telephone Operator (uncredited)