Family name Phengphachanh (Phengphachanh 
) , across the world, is a rare cognomen. The last name Phengphachanh is characteristic of Laos, where it is quite a rare surname, France, where it is a very rare surname, and Canada, where it is an extremely rare surname. Not in comparison with a country's population, it most frequently occurs in Laos, the United States, and France. Much less frequently, Phengphachanh is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phengphachanh | Canada, France, Laos, United States, United Kingdom |