Family name Boonyavanit (Boonyavanit 
) , worldwide, is a very rare cognomen. The last name Boonyavanit is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Boonyavanit | Thailand |
Thavit, Piradej, Suwitchalee, and Suvitchalee