Cognomen Nāy (นาย 
, Nāy 
) , in the entire world, is a very rare last name. The cognomen Nāy is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much more prevalently, Nāy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| นาย | Thailand |
| Nāy | Myanmar |