Family name Vilhelmi (Vilhelmi 
) , throughout the world, is an extremely rare surname. The cognomen Vilhelmi is habitual in Georgia, where it is a very rare surname, and Spain, where it is an extremely rare surname. Likewise, Vilhelmi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vilhelmi | Finland, Spain, Georgia |
Vilho, Ville, Вилгелми, Вилхелми, Вильгельми, Вільгельми, Вільгельмі, and Вільхельмі