Surname Prachomphonh (Prachomphonh 
) , in all the world, is an extremely rare cognomen. The cognomen Prachomphonh is characteristic of Northern America, particularly the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Prachomphonh | United States |
Bruce, Sammie, Oupradith, Sisavath, and Khamphoune