Cognomen Plienkaew (Plienkaew 
) , in all the world, is a very rare surname. The cognomen Plienkaew is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Plienkaew | Thailand |
Thitima, Anchalee, Orraphan, and Thawatchai