Leninsk-Kuznetsky (Russian: Ле́нинск-Кузне́цкий, Russian pronunciation: [ˈlʲenʲɪnsk kʊzˈnʲɛt͡skʲij]), known as Kolchugino (Кольчу́гино, pronounced [kɐlʲˈt͡ɕugʲɪnə]) until 1925,[citation needed] is a city in Kemerovo Oblast, Russia, located on both banks of the Inya River (Ob's tributary).

[6] Within the framework of administrative divisions, Leninsk-Kuznetsky serves as the administrative center of Leninsk-Kuznetsky District, even though it is not a part of it.

[1] As an administrative division, it is, together with two rural localities, incorporated separately as Leninsk-Kuznetsky City Under Oblast Jurisdiction—an administrative unit with the status equal to that of the districts.

[3] Leninsk-Kuznetsky is one of the main coal mining centers of the Kuznetsk Basin.

The city is on the trunk roads Leninsk-Kuznetsky–Novosibirsk and Kemerovo–Novokuznetsk and on the railway lines Novosibirsk–Novokuznetsk and Kemerovo–Novokuznetsk.