Family name Mekhayai (Mekhayai 
) , around the world, is a very rare surname. The last name Mekhayai is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Mekhayai | Thailand |
Thansuda, Thanawat, Nutdanai, Nutdhanai, and Chuthasorn