Biryusinsk (Russian: Бирюсинск; IPA: [bʲɪrʲʉˈsʲinsk]) is a town in Tayshetsky District of Irkutsk Oblast, Russia, located on the right bank of the Biryusa River (Angara's basin), 682 kilometers (424 mi) northwest of Irkutsk, the administrative center of the oblast.