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 | United Kingdom, Malaysia, Thailand, United States |
| Bunchan | Australia, Thailand, United Kingdom, United States, India |
| Boonjan | Malaysia, Thailand, United States |