Last name บุณยศักดิ์ (Boonyasak 
, บุณยศักดิ์ , Bunyasak ) , throughout the world, is a very rare cognomen. The family name บุณยศักดิ์ is characteristic of Thailand, where it is a rare surname, Malaysia, where it is a very rare surname, and the United States, where it is an extremely rare surname. More prevalently, บุณยศักดิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Boonyasak | Thailand, United States, Malaysia |
| Bunyasak, บุณยศักดิ์ | Thailand |