Mohammadabad-e Amin () is a neighborhood in the city of Kahrizak in Kahrizak District of Ray County, Tehran province, Iran.
At the time of the 2006 National Census, Mohammadabad-e Amin's population was 280 in 83 households, when it was a village in Kahrizak Rural District. The following census in 2011 counted 39 people in 10 households.
The village was annexed by the city of Kahrizak in 2023.