Cognomen Koliu (Колю 
, Кольо , Koliu 
) , around the world, is a common last name. The family name Koliu is habitual in Bulgaria, where it is a common surname, Malaysia, where it is a rare surname, and Ukraine, where it is a very rare surname. In absolute terms, it most frequently occurs in Bulgaria, Malaysia, and India. Likewise, Koliu is the forename as well as the last name.