Capt. Cyrus Harding
Richard Crane
Jack Pencroft
Marshall Reed
Mr. Jackson
William Fawcett
Mercurian
George Robotham
Confederate Officer
Stanley Blystone
Thug in Park
Roy Butler
Pirate
Frank Ellis
Narrator (voice)
Knox Manning
Zon Murray
Frank O'Connor
Sid Ross
Union Dispatch Rider
Tom Tyler
Rulu of Mercury
Karen Randle
Anthony Warde
Pierre Watkin
Herbert 'Bert' Brown
Ralph Hodges
Pirate Capt. Shard
Gene Roth
Gideon Spillet
Hugh Prosser
Capt. Nemo
Leonard Penn
Ayrton - The Wild Man
Terry Frost
Moley - Shard Henchman
Rusty Wescoatt
Neb
Bernie Hamilton
Novel
Jules Verne
Director
Spencer Gordon Bennet
Stunt Double
Wally West
Producer
Sam Katzman
Screenplay
Lewis Clay
Royal K. Cole
George H. Plympton
Director of Photography
Fayte M. Browne
Editor
Earl Turner
Art Direction
Paul Palmentola
Production Manager
Herbert B. Leonard
Assistant Director
R. M. Andrews
Sound Engineer
J. S. Westmoreland
Stunts
Music Director
Mischa Bakaleinikoff