Kolagir was a winter pasture located in the territory of the Gazakh uezd of the former Yelizavetpol (Ganja) governorate, later in the former Shamshaddin (Berd) district, and present-day Tavush province. It was dissolved in 1930. In the 16th century, the name of one of the Turkic tribes living in the Ganja-Karabakh region was the Kolagir.

The toponym was formed on the basis of the mentioned tribal name “Kolagir”.