Last name Keophilavong (Keophilavong 
) , all around the world, is quite a rare family name. The cognomen Keophilavong is habitual in Laos, where it is quite a common surname, Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Keophilavong | Thailand, Laos, United States |