Ayun Pa is a district-level town in Gia Lai Province, in the Central Highlands of Vietnam. It used to be known as Cheo Reo after 1975. Ayun Pa covers an area of 287 km2, with a population of 35,058 (2007). The town is situated in the south-eastern part of Gia Lai Province. To the east and north-east is Ia Pa District, to the south-east is Krông Pa District, to the south is Ea H'leo District in Đắk Lắk Province and to the west is Phú Thiện District.