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