Family name Пирош (Piros 
, Pirosh , Пирош 
) , all over the world, is quite a rare surname. The cognomen Пирош is characteristic of Hungary, where it is quite a common surname, Romania, where it is quite a rare surname, and Austria, where it is a rare surname. Measured by absolute frequency, this name is the most popular in Hungary, Romania, and the United States. Much less frequently, Пирош is the forename as well as the last name.