Family name Wilsia (Wilsia 
) , globally, is an extremely rare cognomen. The last name Wilsia is characteristic of Latin America and the Caribbean, particularly Honduras, where it is a very rare surname, and Mexico, where it is an extremely rare surname. Much more prevalently, Wilsia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wilsia | Democratic Republic of the Congo, Mexico, Brazil, India, United States |