Cognomen Руель (Ruehl 
, Руель 
) , around the world, is quite a rare surname. The last name Руель is characteristic of Western Europe, particularly Germany, where it is quite a rare surname, Luxembourg, and Austria, where it is a rare surname. In absolute terms, this name is the most popular in Germany, the United States, and Austria. Very seldom, Руель is the forename as well as the last name.