Cognomen Phavilay (Phavilay 
) , worldwide, is a rare surname. The surname Phavilay is habitual in Laos, where it is quite a rare surname, and the United States, where it is an extremely rare surname. Very seldom, Phavilay is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phavilay | United States, India, Laos, Thailand |