Look up buu in Wiktionary, the free dictionary.
Buu or BUU may refer to:
- Majin Buu, alternate spelling for Majin Boo, a character in Dragon Ball
- Muara Bungo Airport IATA code
- Burlington Municipal Airport (Wisconsin)'s FAA identifier
- Budu language's ISO 639-3 code
- Burapha University
- Geji language
- People with the name
- Buu Hoi (1915–1972), Vietnamese diplomat and cancer researcher