Nasir Mahalleh (Persian: نصيرمحله) is a village in, and the capital of, Ahmadsargurab Rural District of Ahmadsargurab District, Shaft County, Gilan province, Iran.

At the 2006 National Census, its population was 3,090 in 802 households. The following census in 2011 counted 3,124 people in 863 households. The latest census in 2016 showed a population of 2,700 people in 894 households. It was the most populous village in its rural district.