Lost World

The Lost World can refer to:
 * Lost World (Donkey Kong Country 2: Diddy's Kong Quest) – the hidden world of Crocodile Isle in Donkey Kong Country 2: Diddy Kong's Quest, and its follow-up Donkey Kong Land 2.
 * Lost World (Donkey Kong Land III) – the hidden world of the Northern Kremisphere in Donkey Kong Land III.
 * Krematoa is also called the Lost World.