Aq Bulagh () is a village in Sanjabad-e Sharqi Rural District of the Central District in Khalkhal County, Ardabil province.
At the time of the 2006 National Census, the village's population was 559 in 109 households. The following census in 2011 counted 480 people in 109 households. The 2016 census measured the population of the village as 352 people in 90 households.