Surname Grauen (Grauen 
) , in the world, is a very rare last name. The cognomen Grauen is characteristic of Estonia, where it is quite a rare surname, and Germany, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Grauen | Germany, Estonia |
|
urmas grauen Estonian mountaineer, EE (b. 1952) |
|
| albert grauen (b. 1902) |
|