Tuy may refer to:
Places:
- Tuy, Iran, a village in North Khorasan Province, Iran
- Ocumare del Tuy, a city in the Miranda State in northern Venezuela
- The Tuy River in Venezuela
- Santa Teresa del Tuy, a city in the state of Miranda, Venezuela
- Tuy, Batangas, a municipality in the Province of Batangas, Philippines
- Tuy Đức District, a district of Dak Nong Province in Vietnam
- Tuy An, a district of Phu Yen Province in the South Central Coastal region of Vietnam
- Tuy Hoa, the capital city of Phu Yen Province in south-central Vietnam
- Dong Tac (Tuy Hoa) Airport (IATA: TBB, ICAO: VVTH)
- Tuy Hoa Air Base, used by the United States Air Force during the Vietnam War
- Tuy Hoa Railway Station, a railway station on the North-South Railway in Vietnam
- Tuy Phong, a district of Binh Thuan Province in the Southeast region of Vietnam
- Tuy Phuoc, a district of Binh Dinh Province in the South Central Coast region of Vietnam
- Tuy Province, a province of Burkina Faso, in its Hauts-Bassins Region
People:
- Hoàng Tụy (born 1927), a prominent Vietnamese applied mathematician
- Lucas of Tuy (died 1249), a Leonese cleric and intellectual, remembered best as a historian
Other:
- The Spanish spelling of Tui in Galicia, Spain