Surname ថ្លាយ (ថ្លាយ 
) , worldwide, is an extremely rare cognomen. The cognomen ថ្លាយ is habitual in South-eastern Asia, particularly Cambodia, where it is a very rare surname. Also, ថ្លាយ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ថ្លាយ | Cambodia |