Last name บุญยรัตพันธุ (บุญยรัตพันธุ 
) , in the world, is an extremely rare family name. The surname บุญยรัตพันธุ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| บุญยรัตพันธุ | Thailand |