Last name Thanyavong (Thanyavong 
) , worldwide, is an extremely rare cognomen. The cognomen Thanyavong is habitual in Northern America, particularly the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Thanyavong | United States |
| thanyavong savang Laotian prince, LA (b. 1964) |
|