Last name บุญญาสิทธิ์ (Boonyasit 
, บุญญาสิทธิ์ , Boonyasidhi ) , globally, is a rare cognomen. The family name บุญญาสิทธิ์ is habitual in Thailand, where it is a rare surname, Cambodia, where it is a very rare surname, and the United States, where it is an extremely rare surname. Also, บุญญาสิทธิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Boonyasit | United States, Thailand, Cambodia |
| Boonyasidhi, บุญญาสิทธิ์ | Thailand |
| Boonyasait | Thailand, United States |