Last name קוליו (Kolyu 
, Coolio 
, Kolju 
) , in all the world, is a rare cognomen. The surname קוליו is characteristic of Estonia, where it is quite a rare surname, Finland, where it is a rare surname, and Australia, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in Estonia, the United States, and Spain. Likewise, קוליו is the forename as well as the last name.