Kirk Douglas as Ned Land

James Mason as Captain Nemo

Paul Lukas as Prof. Pierre Arronax

Peter Lorre as Conseil

Robert J. Wilke as First Mate of the Nautilus

Ted de Corsia as Capt. Farragut

Carleton Young as John Howard

J.M. Kerrigan as Billy

Percy Helton as Coach Driver

Gloria Pall as Blonde Girlfriend (uncredited)

Ron Nyman as Sailor (uncredited)

Fred Graham as Casey Moore (uncredited)

Harry Harvey as Ticket Agent (uncredited)

Charles Grodin as Drummer Boy (uncredited)

Harper Goff as Minister in San Francisco Steam Packet office (uncredited)

Eddie Marr as Shipping Agent (uncredited)

John Daheim as Nautilus Seaman (uncredited)

Jack Stoney as Police Detective (uncredited)

Laurie Mitchell as One of Ned's Girlfriends

Jack Gargan as Reporter from The Post (uncredited)

Dayton Lummis as Reporter from The Bulletin (uncredited)

Jack Pennick as Cannon Mate Carson (uncredited)

Herb Vigran as Reporter for the Globe (uncredited)