Nahaldan

is a village in Mazinan Rural District of the Central District in Davarzan County, Razavi Khorasan province, Iran.

==Demographics== ===Population=== At the time of the 2006 National Census, the village's population was 554 in 165 households, when it was in the former Davarzan District of Sabzevar County. The following census in 2011 counted 488 people in 156 households. The 2016 census measured the population of the village as 414 people in 156 households, by which time the district had been separated from the county with the establishment of Davarzan County. The rural district was transferred to the new Central District. It was the most populous village in its rural district.