Kolchin (Russian: Колчин) is a Russian masculine surname originating from the given name Nikolai (Nicholas); its feminine counterpart is Kolchina. The surname may refer to the following notable people: Alevtina Kolchina (1930–2022), Soviet cross-country skier Denys Kolchin (born 1977), Ukrainian football defender and manager Ellis Kolchin (1916–1991), American mathematician Lie–Kolchin theorem Kolchin topology Fjodor Koltšin (1957–2018), Estonian cross-country skier, son of Alevtina and Pavel Nataliya Kolchina (born 1939), Soviet long track speed skater Pavel Kolchin (1930–2010), Soviet cross-country skier, husband of Alevtina Peter Kolchin (1943–2025), American historian Yuri Kolchin (born 1976), Russian football player
References Ganzhina, I. M. (2001) Словарь современных русских фамилий. Moscow: Astrel. p. 248. .