Hoseynan (, also Romanized as ḨoseynÃÂn and ḨoseynÃÂn; also known as ḨoseynëÃÂn, HoseynëyÃÂn, Husain Nà «d, Husain Nà «n, and Husinan) is a village in Qohab-e Rastaq Rural District, Amirabad District, Damghan County, Semnan Province, Iran. At the 2006 census, its population was 178, in 50 families.