Tuu or TUU may refer to:
As a name Tuu (band) (1980s–1999), British ambient band Tuu languages, spoken in Botswana and South Africa Xuan Tuu (1925–1996), Vietnamese writer properly addressed as Tuu Tuu, fictional homeworld of Lugians in the game Asheron's Call 2
As an abbreviation Tasmania University Union, in Australia
As a code Tabuk Regional Airport, in Saudi Arabia, IATA code TUU Tututni language by ISO 639-3 code
See also Kings of Easter Island, many including "Tuu" in their name Kyzyl-Tuu, several places in Kyrgyzstan