Family name Phiahouaphanh (Phiahouaphanh 
) , around the world, is a rare last name. The cognomen Phiahouaphanh is habitual in South-eastern Asia, particularly Laos, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Phiahouaphanh | Laos |
Kaisone, and Thipphavanh