Last name Pornsannuwat (Pornsannuwat 
) , globally, is a rare family name. The last name Pornsannuwat is habitual in Thailand, where it is a rare surname, and China, where it is an extremely rare surname. Much less frequently, Pornsannuwat is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pornsannuwat | Thailand, China |