Family name Sornsirivong (Sornsirivong 
) , across the world, is an extremely rare last name. The surname Sornsirivong is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sornsirivong | Thailand |
Supaluk, Siwakorn, and Pitchayakorn