Tulun (Russian: Тулун; IPA: [tʊˈlun]) is a town in Irkutsk Oblast, Russia, located on the Iya River (Angara's basin), 390 kilometers (240 mi) northwest of Irkutsk. Population: 44,603 (2010 Census preliminary results); 51,848 (2002 Census); 52,903 (1989 Census).