Family name Pongrattanakul (Pongrattanakul 
) , all over the world, is a very rare last name. The cognomen Pongrattanakul is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Pongrattanakul | Thailand |
Arnan, Yhanakorn, Koranick, Dolchana, and Suthiphorn