Family name Phahongchanh (Phahongchanh 
) , in the entire world, is a very rare cognomen. The family name Phahongchanh is habitual in France, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Phahongchanh is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Phahongchanh | United States, France |