Last name Pittayawat (Pittayawat 
) , in the world, is a very rare family name. The cognomen Pittayawat is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, Pittayawat is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pittayawat | Thailand |
| pittayawat pittayaporn Thai linguist, TH |
|