Hoseynabad (, also Romanized as Ḩoseynābād; also known as Husaīnabad) is a city in, and the capital of, Hoseynabad District of Sanandaj County, Kurdistan province, Iran. The city is populated by Kurds.
At the 2006 census, its population was 1,293 in 322 households, when it was a village in Hoseynabad-e Jonubi Rural District of the Central District. The following census in 2011 counted 1,451 people in 366 households. The latest census in 2016 showed a population of 1,594 people in 411 households, by which time the rural district had been separated from the district in the establishment of Hoseynabad District.
After the census, the village was elevated to the status of a city.