Family name บุญสัน (บุญสัน 
, Boonson 
, Bunson 
) , in all the world, is a rare surname. The surname บุญสัน is characteristic of Thailand, where it is quite a rare surname, New Zealand, where it is a very rare surname, and the United States. In absolute terms, it is the most numerous in Thailand, the United States, and India. Much less frequently, บุญสัน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| บุญสัน | Thailand |
| Boonson | Nicaragua, India, United States, Thailand |
| Bunson | Nigeria, Thailand, India, Philippines, United States |