Cognomen Ерас (Jeras 
, Ерас 
) , worldwide, is a rare surname. The cognomen Ерас is habitual in Slovenia, where it is quite a common surname, Croatia, where it is quite a rare surname, and Malaysia, where it is a rare surname. Not in comparison with a country's population, it is commonest in Slovenia, the United States, and Malaysia. Very seldom, Ерас is the forename as well as the last name.