Worlds in Kingdom Hearts III are areas that serve as the levels of the game. Each world is either based on an existing Disney movie property, or is an original Kingdom Hearts property.
100 Acre Wood - Arendelle - Castle Oblivion - Dark World - Destiny Islands - Disney Castle - Dive to the Heart - Keyblade Graveyard - Kingdom of Corona - Land of Departure - Monstropolis - Mysterious Tower - Olympus - Radiant Garden - San Fransokyo - Scala ad Caelum - The Caribbean - The Final World - Toy Box - Twilight Town - Quadratum