Valko
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 Chervenkov, Prime Minister of communist Bulgaria
 Valko or Vlaksho, region of the 1st Bulgarian Empire.