In the entire world, จันทัย (Chantai 
, จันทัย ) is a rare epicene given name. The first name จันทัย is characteristic of Thailand, where it is a very rare epicene name, the United States, where it is a very rare primarily feminine, but very infrequently masculine name, and India, where it is an extremely rare gender-neutral name. Likewise, จันทัย is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Chantai | Jamaica, United States, India, Thailand, Canada |
| จันทัย | Thailand |