Kasrineh () is a village in, and the capital of, Pain Velayat Rural District in the Central District of Kashmar County, Razavi Khorasan province, Iran.
At the time of the 2006 National Census, the village's population was 1,964 in 543 households. The following census in 2011 counted 2,092 people in 639 households. The 2016 census measured the population of the village as 2,105 people in 685 households.