Family name Boonhai (Boonhai 
) , in the entire world, is a rare surname. The surname Boonhai is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Likewise, Boonhai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Boonhai | China, Malaysia, Thailand, United States |