Cognomen Phinthong (Phinthong 
) , globally, is a rare last name. The surname Phinthong is habitual in Thailand, where it is a rare surname, and the United Kingdom, where it is a very rare surname. Likewise, Phinthong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phinthong | Laos, Thailand, United States, United Kingdom |