Family name Эрташ (Ertaş 
, Эрташ 
) , across the world, is a common cognomen. The cognomen Эрташ is characteristic of Turkey, where it is quite a common surname, Germany, where it is a very rare surname, and Russia, where it is an extremely rare surname. Measured by absolute frequency, it most frequently occurs in Turkey, China, and Germany. Very seldom, Эрташ is the forename as well as the last name.