Cognomen Thilay (Thilay 
) , globally, is a rare last name. The surname Thilay is characteristic of Myanmar, where it is a rare surname, Cambodia, where it is a very rare surname, and India, where it is an extremely rare surname. Likewise, Thilay is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thilay | Myanmar, Cambodia, United States, India, France |