Qaleh Nasir (Persian: قلعه نصير)[a] is a village in Miyankuh-e Sharqi Rural District of Afrineh District, Mamulan County, Lorestan province, Iran.

At the time of the 2006 National Census, the village's population was 471 in 102 households, when it was in Mamulan District[b] of Pol-e Dokhtar County.

[6] The 2016 census measured the population of the village as 384 people in 97 households.

It was the most populous village in its rural district.

This Lorestan province location article is a stub.