Shad Mansur Mahalleh () is a village in Sakht Sar Rural District of the Central District in Ramsar County, Mazandaran province, Iran.
At the time of the 2006 National Census, the village's population was 466 in 127 households. The following census in 2011 counted 719 people in 225 households. The 2016 census measured the population of the village as 899 people in 280 households.