Family name Sawangprasert (Sawangprasert 
) , in all the world, is a very rare cognomen. The cognomen Sawangprasert is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sawangprasert | Thailand |
Sarita, Saravut, and Nattaruthai