Mohammadabad () is a village in Bostan Rural District of Sangan District in Khaf County, Razavi Khorasan province, Iran.
At the time of the 2006 National Census, the village's population was 111 in 20 households. The following census in 2011 counted 94 people in 27 households. The 2016 census measured the population of the village as 110 people in 30 households.