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