Surname ธำรงวิทวัสพงศ์ (ธำรงวิทวัสพงศ์, Thumrongvitvasapong 
) , throughout the world, is an extremely rare cognomen. The family name ธำรงวิทวัสพงศ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Thumrongvitvasapong | Thailand |