Cognomen Sitthavong (Sitthavong 
) , around the world, is a rare surname. The family name Sitthavong is habitual in South-eastern Asia, particularly Laos, where it is quite a rare surname, and Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sitthavong | Laos, United States, Thailand |
Sengaloun, Khonsavanh, and Thipphavanh