Cognomen Vongsak (Vongsak 
) , throughout the world, is a rare last name. The last name Vongsak is habitual in Laos, where it is quite a rare surname, Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Vongsak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vongsak | United States, Laos, Thailand |
| souk vongsak politician (b. 1915) |
|