Samiabad-e Arbab Din Mohammad (Persian: سميع ابادارباب دين محمد)[a] is a city in, and the capital of, Pain Jam District of Torbat-e Jam County, Razavi Khorasan province, Iran.

[4] It is also the administrative center for Zam Rural District.

[5][b] At the time of the 2006 National Census, Samiabad-e Arbab Din Mohammad's population was 1,408 in 314 households, when it was a village in Zam Rural District.

[7] The 2016 census measured the population of the city as 1,617 people in 445 households.

This Torbat-e Jam County location article is a stub.