Surname ภูศักดิ์ (Pusak 
, ภูศักดิ์ , Phusak ) , all over the world, is a rare cognomen. The cognomen ภูศักดิ์ is habitual in Hungary, where it is a rare surname, Thailand, and Czechia. Not in comparison with a country's population, it is the most numerous in Thailand, Turkey, and the United States. Likewise, ภูศักดิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pusak | India, Thailand, Turkey, United States, Hungary |
| ภูศักดิ์ | Thailand |
| Phusak | India, Thailand |