Balasagun (Kyrgyz: Баласагун or Баласагын Balasagyn; Chinese: 八剌沙袞) was an ancient Sogdian city in modern-day Kyrgyzstan, located in the Chüy Valley between Bishkek and the Issyk-Kul lake.

Founded by the Kara-Khanid Khanate in the ninth century, Balasagun soon supplanted Suyab as the main political and economical centre of the Chüy Valley; its prosperity declined after the Mongol conquest.

The poet Yūsuf Balasaguni, known for writing the Kutadgu Bilig, is thought to have been born in Balasagun in the 11th century.

The Burana zone, located at the edge of Tokmok and 6 kilometres (3.7 mi) from the present village of Balasagun, was the west end of the ancient city.

Several earthquakes through the centuries caused much damage, and the current building represents a major renovation carried out in the 1970s.