Cognomen Eiz (Eiz 
, Eiß ) , in the entire world, is a rare surname. The family name Eiz is habitual in Egypt, where it is a rare surname, Sudan, and Saudi Arabia, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Egypt, Sudan, and Germany. Likewise, Eiz is the forename as well as the last name.