The Land Unknown
- Blwyddyn: 1957
- Gwlad: United States of America
- Genre: Adventure, Fantasy, Science Fiction
- Stiwdio: Universal International Pictures
- Allweddair: rescue, helicopter, monster, tyrannosaurus rex, expedition, carnivorous plant, jungle, prehistoric creature, reporter, dinosaur, raft, antarctica, sea monster, pterodactyl, lost world, plesiosaur
- Cyfarwyddwr: Virgil W. Vogel
- Cast: Jock Mahoney, Shirley Patterson, William Reynolds, Henry Brandon, Douglas Kennedy, Phil Harvey