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