Mohammadabad-e Pain () is a village in Mazraeh-ye Shomali Rural District of Voshmgir District in Aqqala County, Golestan province, Iran.
At the time of the 2006 National Census, the village's population was 483 in 87 households. The following census in 2011 counted 492 people in 120 households. The 2016 census measured the population of the village as 513 people in 133 households.