Cognomen Рэу (Reu 
, Rehu 
, Reou 
) , in the world, is quite a rare family name. The family name Рэу is characteristic of Israel, where it is quite a rare surname, Belgium, and Papua New Guinea. Not in comparison with a country's population, it is commonest in South Korea, Israel, and Germany. Also, Рэу is the forename as well as the last name.