Choir (Mongolian: Чойр) is a city in Mongolia. It is the capital of Govisümber Province, in the east-central part of the country. Choir is a center of the Sümber sum of Govisümber Province.

Choir was a military base during the Soviet period. In 1989, the Soviet anti-aircraft missile units left Choir.

The longest runway in Mongolia, now abandoned, is located 25 km N from Choir, a relic of that period. In 1992, the military cantonment passed into the jurisdiction of Govisümber Province, according to the 1992 constitution.

Near the railway station is a statue commemorating Mongolia's first cosmonaut, Jügderdemidiin Gürragchaa.