Last name Yls (Yls 
, Илс 
) , throughout the world, is a rare family name. The last name Yls is characteristic of Algeria, where it is a rare surname, Indonesia, where it is a very rare surname, and Argentina. Not in comparison with a country's population, this name is the most popular in Indonesia, Algeria, and Russia. Very seldom, Yls is the forename as well as the last name.