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Cognomen Kounlaphavong (Kounlaphavong ) , all over the world, is an extremely rare last name. The last name Kounlaphavong is habitual in Northern America, particularly the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kounlaphavong | United States |
Saway, Inpone, Duangphy, and Phoungmalay