Around the globe, ดุย (Dui 
, ดุย 
) is quite a rare epicene first name. The first name ดุย is habitual in Indonesia, where it is a rare gender-neutral name, India, where it is a very rare unisex name, and Vietnam, where it is a very rare predominantly masculine, but very infrequently female name. Not in comparison with a country's population, it is commonest in India, Indonesia, and Bangladesh. Also, ดุย is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Dui | Indonesia, Taiwan, Malaysia, India, China |
| ดุย | Thailand |