Kolchak, Kolçak or Kolčák is a surname from Turkish kolçak. Notable people with the surname include:
Alexander Kolchak (1874–1920), Russian naval commander, head of anti-Bolshevik White forces Erkan Kolçak Köstendil, Turkish actor, director and former footballer Eşref Kolçak (1927–2019), Turkish actor Iliash Kolchak ("Kolchak-Pasha") (fl. before 1710–1743), Moldavian mercenary and military commander Kristián Kolčák (born 1990), Slovak football midfielder Sibel Kolçak, Turkish football referee
Fictional characters Carl Kolchak, protagonist of Kolchak: The Night Stalker, an American television series
See also
Colceag