Family name มหาบุญพาชัย (มหาบุญพาชัย 
, Mahabunphachai 
, Mahaboonphachai ) , around the world, is a very rare cognomen. The last name มหาบุญพาชัย is characteristic of Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Mahaboonphachai, มหาบุญพาชัย | Thailand |
| Mahabunphachai | United States, Thailand |