Last name หนูศักดิ์ (Ratsak 
, หนูศักดิ์ , Nousak 
) , around the world, is a rare surname. The family name หนูศักดิ์ is characteristic of Thailand, where it is a rare surname, Germany, where it is a very rare surname, and Netherlands. Not in comparison with a country's population, it most frequently occurs in Thailand, Germany, and the United States. Very seldom, หนูศักดิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ratsak | Germany, Thailand, Netherlands |
| หนูศักดิ์ | Thailand |
| Nousak | United States, Thailand |