Cognomen อุดรศักดิ์ (อุดรศักดิ์ 
, Udonsak 
) , throughout the world, is a very rare last name. The last name อุดรศักดิ์ is characteristic of Thailand, where it is a very rare surname, Nigeria, where it is an extremely rare surname, and Canada. More prevalently, อุดรศักดิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| อุดรศักดิ์ | Thailand |
| Udonsak | Nigeria, Thailand, Canada, United States, United Kingdom |