Chu Chu, Chuchu, or Chu-Chu can refer to the following things:
- ChuChu, a type of monster from The Legend of Zelda video game series
- Chu-Chu, a character from Xenogears
- Chuchu, a character from Revolutionary Girl Utena
- A type of mouse from ChuChu Rocket!
- Chuchu, a Japanese shōjo manga magazine
- Chuchu, a character from the Kirby video game series
- A Pikachu kept by Yellow in Pokémon Adventures
- Chayote, a vegetable