Family name Ploykarn (Ploykarn 
) , throughout the world, is an extremely rare surname. Predominantly, Ploykarn is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ploykarn | Thailand |
Bodhipimpanon, Karnkanya, Kunkonlakarn, Kiatiwat, Parnpetch, Pornpibul, Jantamas, and Suewanichsakul