Last name ฮาดตุวงค์ (ฮาดตุวงค์ 
) , throughout the world, is an extremely rare cognomen. The cognomen ฮาดตุวงค์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ฮาดตุวงค์ | Thailand |