Family name ทนนศักดิ์ (ทนนศักดิ์ 
) , in the world, is a very rare cognomen. The last name ทนนศักดิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, ทนนศักดิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ทนนศักดิ์ | Thailand |