Surname Vilasay (Vilasay 
) , globally, is an extremely rare family name. Much more frequently, Vilasay is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vilasay | United States, Laos, India, Canada |
Xaylavong, Boudhsamphanh, Khemphavanh, Rathahao, Vongsady, Phimmachack, and Souvannasane