Cognomen Boonwirat (Boonwirat 
) , all over the world, is a very rare surname. The last name Boonwirat is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Boonwirat is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Boonwirat | Thailand |