Surname ירקו (Jarkko 
, ירקו 
) , in the world, is a rare family name. The last name ירקו is characteristic of Finland, where it is quite a rare surname, Latvia, where it is a rare surname, and Austria. Not in comparison with a country's population, this name is the most popular in Finland, the United States, and Austria. More prevalently, ירקו is the forename as well as the last name.