Okakaume-boshi (オカカウメ星 Okakaume-boshi, lit. "Planet Okakaume") is a planet of superheroes in Dr. Slump. It is also the homeworld of Sourman and his brother Syoppaman.
In the film, Dr. Slump: Hoyoyo! Space Adventure, Dr. Mashirito attacks the planet, leaving it in ruins.
- The planet's name is a pun on okaka umeboshi, which refers to fermented fish served with pickled plums in Japanese.