Qarah Qasemlu () is a village in Gug Tappeh Rural District of the Central District in Bileh Savar County, Ardabil province, Iran.
At the time of the 2006 National Census, the village's population was 1,666 in 346 households. The following census in 2011 counted 1,742 people in 457 households. The 2016 census measured the population of the village as 1,529 people in 450 households.