Family name Khoutlavong (Khoutlavong 
) , all over the world, is a rare last name. The last name Khoutlavong is characteristic of South-eastern Asia, particularly Laos, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Khoutlavong | Laos |
Sengdao, Somsack, and Nanthasene