Family name Prasitwanakul (Prasitwanakul 
) , all over the world, is an extremely rare last name. The last name Prasitwanakul is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Prasitwanakul | Thailand |
Suwijak, and Thanongsak