Mohammadabad (Persian: محمداباد‎, also Romanized as Moḩammadābād; also known as Moḩammad ‘Alī Khān (Persian: محمدعليخان), Qal‘eh-ye Moḩammad, and Qal‘eh-ye Moḩammad ‘Alī Khān) is a village in Ziarat Rural District, in the Central District of Shirvan County, North Khorasan Province, Iran.