Family name Sungnak (Sungnak 
) , in the world, is a very rare surname. The last name Sungnak is characteristic of Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Sungnak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sungnak | United States, Thailand |
| waradon sungnak researcher (ORCID 0000-0002-0136-4960) |
|