Bagakhangai (, small wooded area) is one of nine düüregs (districts) of the Mongolian capital of Ulaanbaatar.
Bagakhangai was established as the home of a Soviet military air base. It was then established as a district of Ulaanbaatar in 1989.
Bagakhangai is an exclave of southeast of the main part of the capital surrounded by Töv Province. It has a total area of 140 km<sup>2</sup>.
It is subdivided into two khoroos (subdistricts), #1 () khoroo and #2 () khoroo. It consists of six khesegs, with each khoroo consists of three khesegs.
The district is connected to the main Ulaanbaatar by 90 km of paved road.