'Leninsk-Kuznetsky' (), known as 'Kolchugino' (Кольчу́гино) until 1925, is a city in
Kemerovo Oblast,
Russia, located on both banks of the
Inya River (
Ob's tributary) at around . Population: 109,300 (2005 est.); 112,253 (
2002 Census); 128,000 (1972); 83,000 (1939); 20,000 (1926).
Leninsk Kuznetsky is one of the main
coal mining centers of the
Kuznetsk Basin.