Surname Phatthavong (Phatthavong 
) , in the entire world, is a very rare last name. The family name Phatthavong is characteristic of South-eastern Asia, particularly Laos, where it is a rare surname. Much less frequently, Phatthavong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phatthavong | Laos, United States |