The Cap Kingdom is a location that appears in Super Mario Odyssey. It is a vast realm in the form of a top hat. Its most notable city is Bonneton, which serves as the first kingdom in the game. This is the hometown of Cappy and Tiara.

The kingdom is notable for being primarily inhabited by Bonneters. The primary currency of the Cap Kingdom is purple Top Hats.

There is an airship owned by one of the residents, which is found crashed towards the center of town towards the beginning. Past the residential area, there is a building plastered with posters advertising the imminent wedding of Princess Peach and Bowser.