Langar () is a village in Qazi Rural District of Samalqan District in Samalqan County, North Khorasan province, Iran.
At the time of the 2006 National Census, the village's population was 782 in 211 households. The following census in 2011 counted 1,016 people in 273 households. The 2016 census measured the population of the village as 875 people in 256 households.