Malusan (Persian: ملوسان‎, also Romanized as Malūsān; also known as Malhūsān, Malīsar, and Mīsar) is a village in Tariq ol Eslam Rural District, in the Central District of Nahavand County, Hamadan Province, Iran. At the 2006 census, its population was 602, in 125 families.