Irkutsk is the largest city and administrative center of Irkutsk Oblast, Russia.
Irkutsk may also refer to: Irkutsk Oblast, a federal subject of Russia Irkutsk Airport, an airport in Irkutsk, Russia Irkutsk Energy, a hydroelectric company in Russia Irkutsk Northwest Airport, is a civilian airport located near Irkutsk Russia Irkutsk railway station, a station along the Trans-Siberian Railway