Rostam Rud () is a village in Natel Kenar-e Sofla Rural District of the Central District in Nur County, Mazandaran province, Iran.
At the time of the 2006 National Census, the village's population was 2,556 in 713 households. The following census in 2011 counted 2,764 people in 857 households. The 2016 census measured the population of the village as 2,673 people in 867 households, the most populous in its rural district.