Zheleznogorsk-Ilimsky (Russian: Железногорск-Илимский, IPA: [ʐɪlʲɪznɐˈgorsk ɪˈlʲimskʲɪj]) is a town and the administrative center of Nizhneilimsky District of Irkutsk Oblast, Russia, located 478 kilometers (297 mi) north of Irkutsk, the administrative center of the oblast.

[citation needed] It was initially named Korshunikha (Коршуниха), after prospector Shestak Korshunov who had discovered the Iron Mountain in the 17th century.

[citation needed] It was granted urban-type settlement status in the 1950s, after a period of growth following the construction of the western section of the Baikal–Amur Mainline, and renamed Zheleznogorsk (Iron Mountain Town).

With the completion of a major ore processing plant, town status was granted in 1965 under the present name, the suffix "Ilimsky" added to differentiate from other towns of the same name.

The town has a station called Korshunikha-Angarskaya on the Baikal–Amur Mainline, it is also on the road from Bratsk to Ust-Kut.