Around the globe, ทวนศักดิ์ (ทวนศักดิ์ 
, Luansak ) is a very rare masculine given name. The forename ทวนศักดิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare male name. Much less frequently, ทวนศักดิ์ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Luansak, ทวนศักดิ์ | Thailand |