Worldwide, บุญจันทร์ (บุญจันทร์ 
, Boonchan 
, Bunchan 
) is quite a common unisex first name. The first name บุญจันทร์ is characteristic of Thailand, where it is quite a rare gender-neutral name, the United States, where it is an extremely rare gender-neutral name, and India. Also, บุญจันทร์ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| บุญจันทร์ | Thailand |
| Boonchan | Malaysia, United States, United Kingdom, Thailand |
| Bunchan | United Kingdom, Australia, United States, Thailand, India |
| Boonjan | Malaysia, United States, Thailand |