Cognomen Kreiz (Kreiz 
, קרייז ) , all over the world, is a very rare surname. The last name Kreiz is habitual in Israel, where it is a rare surname, Norway, where it is a very rare surname, and Germany. Not in comparison with a country's population, it is commonest in Israel, Germany, and the United Kingdom. Much less frequently, Kreiz is the forename as well as the last name.