Family name Boonyalertroj (Boonyalertroj 
) , all over the world, is a very rare cognomen. The last name Boonyalertroj is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Boonyalertroj | Thailand |
Pornprom, Thanawat, and Phattranit