Surname บุญแข็ง (บุญแข็ง 
) , globally, is a rare cognomen. The cognomen บุญแข็ง is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, บุญแข็ง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| บุญแข็ง | Thailand |