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.

[2] Tây Sơn borders Gia Lai province to the west, the districts of An Nhơn and Phù Cát to the east, Vĩnh Thạnh to the north and Vân Canh to the south.

Most of the communes of Tây Sơn District lie on provincial road 19 between An Nhơn and Gia Lai province.

This article about a location in Bình Định province, Vietnam is a stub.