იდუმალი კუნძული

Richard Crane Capt. Cyrus Harding

Marshall Reed Jack Pencroft

Karen Randle Rulu of Mercury

Ralph Hodges Herbert 'Bert' Brown

Gene Roth Pirate Capt. Shard

Hugh Prosser Gideon Spillet

Leonard Penn Capt. Nemo

Terry Frost Ayrton - The Wild Man

Rusty Wescoatt Moley - Shard Henchman

Bernie Hamilton Neb

William Fawcett Mr. Jackson

George Robotham Mercurian

Stanley Blystone Confederate Officer

Roy Butler Thug in Park

Frank Ellis Pirate

Knox Manning Narrator (voice)