Tây Sơn is a district (huyện) of Bình Định Province in the South Central Coast region of Vietnam.
The district capital lies at Phú Phong.
- ^ Bình Định Statistics Office (2010): Bình Định Statistical Yearbook 2009. Statistical Publishing House, Hanoi
- ^ "Districts of Vietnam". Statoids. Retrieved March 13, 2009.
Coordinates: 13°55′01″N 108°55′01″E / 13.917°N 108.917°E