Family name บุญยรัตน์ (Boonyarat 
, Bunyarat , บุญยรัตน์ ) , throughout the world, is quite a rare last name. The cognomen บุญยรัตน์ is habitual in South-eastern Asia, particularly Thailand, where it is quite a rare surname, Malaysia, where it is an extremely rare surname, and Philippines. In absolute terms, it is commonest in Thailand, China, and the United States. Also, บุญยรัตน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Boonyarat | China, Philippines, United States, Malaysia, Thailand |
| Bunyarat | United States, Malaysia, Thailand |
| บุญยรัตน์ | Thailand |
Boonyaradt, Boonyorat, and Bounyarath