Kolchak

Kolchak, Kolçak or Kolčák is a surname. Notable people with the surname include:

• Iliash Kolchak ("Kolchak-Pasha") (fl. before 1710–1743), Moldavian mercenary and military commander
• Alexander Kolchak (1874–1920), Russian naval commander, head of anti-Bolshevik White forces
• Eşref Kolçak (1927–2019), Turkish actor
• Kristián Kolčák (born 1990), Slovak football midfielder