Surname ใหน (Nai 
, ใหน 
) , worldwide, is a widespread cognomen. The family name ใหน is habitual in Fiji, where it is quite a common surname, Myanmar, and Malaysia (explore the name in all countries). Not in comparison with a country's population, the name is most common in India, Myanmar, and China. Much less frequently, ใหน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nai | Indonesia, China, Malaysia, India, Myanmar |
| ใหน | Thailand |