Surname Wuillai (Wuillai 
) , throughout the world, is a rare family name. The last name Wuillai is habitual in France, where it is a rare surname, and the United Kingdom, where it is an extremely rare surname. Much less frequently, Wuillai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wuillai | United Kingdom, France |