Masjedlu is a village in Minjavan-e Gharbi Rural District, Minjavan District, Khoda Afarin County, East Azerbaijan Province, Iran. At the 2006 census, its population was 45, in 14 families. The online edition of the Dehkhoda Dictionary, quoting Iranian Army files, reports a population of 639 people in late 1940s. According to a more recent statistics (2012) the population is 45 people in 14 families.