Cognomen Phanthai (パン 
, Phanthai 
) , globally, is a rare family name. The family name Phanthai is characteristic of Laos, where it is quite a rare surname, Japan, where it is a rare surname, and Thailand, where it is a very rare surname. Likewise, Phanthai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| パン | Japan |
| Phanthai | Laos, United States, Canada, Thailand |