Vincent Price as Captain Robur

Charles Bronson as John Strock

Mary Webster as Dorothy Prudent

Henry Hull as Prudent

David Frankham as Phillip Evans

Wally Campo as Turner

Vito Scotti as Topage

Richard Harrison as Alistair

Ken Terrell as Shanks

Steve Masino as Weaver

Peter Besbas as Wilson

Gordon Jones as Talkative Townsman

Harry 'Snub' Pollard as Man at Balloon Society Meeting (uncredited)