Valko may refer to:
Valkó (village), a village and commune in the Pest county, Hungary Valkó County, a county of the medieval Kingdom of Hungary Ernest Valko, murdered Slovak lawyer Taras Valko, Belarusian sprint canoer Valko (given name) Valko or Vlaksho, region of the 1st Bulgarian Empire. Valko, a cancelled character in the game Love and Deepspace