Surname Grauwen (Grauwen 
) , across the world, is a very rare last name. The cognomen Grauwen is characteristic of Belgium, where it is a rare surname, Netherlands, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Grauwen | United States, Belgium, Netherlands |
| wilfried marcel grauwen (b. 1933) |
|