Family name บุญโข (Boonkhai 
, บุญโข , Boonkho ) , in the entire world, is a very rare last name. The surname บุญโข is characteristic of Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, บุญโข is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Boonkhai | Thailand, United States, Malaysia |
| Boonkou, บุญโข, Boonkho | Thailand |