Last name บุญจอย (บุญจอย 
) , in all the world, is a very rare surname. The family name บุญจอย is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, บุญจอย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| บุญจอย | Thailand |