Qach Kanlu () is a village in Dowlatkhaneh Rural District of Bajgiran District in Quchan County, Razavi Khorasan province, Iran.
At the time of the 2006 National Census, the village's population was 1,076 in 257 households. The following census in 2011 counted 902 people in 262 households. The 2016 census measured the population of the village as 725 people in 236 households.