Surname บุญจง (บุญจง 
, Boonjong , Boonchong 
) , around the world, is quite a rare cognomen. The last name บุญจง is habitual in South-eastern Asia, particularly Thailand, where it is quite a rare surname. Also, บุญจง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Boonjong, บุญจง | Thailand |
| Boonchong | Singapore, Malaysia, Thailand, United States |
Bhunjong, Boonthjong, Boonyachong, Bunjonk, and Bunnchong