TUA
TUA may stand for:
- Theological University of Apeldoorn, a theological university in the Netherlands
 - Tokyo University of Agriculture, a private university in Japan
 - Tokyo University of the Arts, a national university in Japan
 - TOW Under Armor, armored missile systems
 - Trinity University of Asia, a university in Quezon City, Philippines
 - Tulcan Airport in Tulcán, Ecuador
 - Turkish Space Agency, (Türkiye Uzay Ajansı, TUA)
 - The Umbrella Academy, a comic series by Gerard Way
 - Lemony Snicket: The Unauthorized Autobiography, a 2002 novel