Surname Руэ (Ruhe 
, Руэ 
) , in all the world, is quite a rare last name. The cognomen Руэ is characteristic of Germany, where it is quite a rare surname, Netherlands, and Denmark, where it is a rare surname. In absolute terms, this name is the most popular in Germany, the United States, and Bangladesh. Very seldom, Руэ is the forename as well as the last name.