Hargalan (Persian: هرگلان)[a] is a village in Kuhestan Rural District of Qaleh Chay District, Ajab Shir County, East Azerbaijan province, Iran.

At the time of the 2006 National Census, the village's population was 3,494 in 756 households.

[5] The 2016 census measured the population of the village as 3,371 people in 955 households.

It was the most populous village in its rural district.

This Ajab Shir County location article is a stub.