Cognomen บุญแทน (Merit 
, บุญแทน , Boontan 
) , in the world, is quite a common surname. The surname บุญแทน is habitual in Thailand, where it is quite a rare surname, Nigeria, and Ghana, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in Nigeria, Thailand, and Mexico. Also, บุญแทน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Merit | Zimbabwe, Egypt, Mexico, Thailand, Nigeria |
| บุญแทน | Thailand |
| Boontan | United States, Malaysia, Thailand |