Cognomen Plengwittaya (Plengwittaya 
) , globally, is a very rare last name. The family name Plengwittaya is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Plengwittaya | Thailand |
Wilai, Piyanan, Attaneeya, and Chottipong