Family name Yys (Yys 
, ใช่) , worldwide, is a rare last name. The family name Yys is characteristic of Myanmar, where it is a rare surname, Saudi Arabia, where it is a very rare surname, and Indonesia. Not in comparison with a country's population, this name is the most popular in Myanmar, Indonesia, and China. Much less frequently, Yys is the forename as well as the last name.