Surname บุญแถม (Merit 
, บุญแถม 
) , across the world, is quite a rare last name. The surname บุญแถม is habitual in Nigeria, where it is quite a rare surname, Ghana, where it is a rare surname, and Mexico. Measured by absolute frequency, it most frequently occurs in Nigeria, Mexico, and France. Likewise, บุญแถม is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Merit | France, Egypt, Mexico, Zimbabwe, Nigeria |
| บุญแถม | Thailand |