Surname Vilsia (Vilsia 
) , worldwide, is an extremely rare last name. The family name Vilsia is habitual in Honduras, where it is a very rare surname, Israel, and Venezuela, where it is an extremely rare surname. More frequently, Vilsia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vilsia | Brazil, Honduras, Venezuela, United States, Peru |