Family name เพ็ญวิเชียร (เพ็ญวิเชียร 
, Penwichian ) , globally, is a very rare cognomen. The family name เพ็ญวิเชียร is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Penwichian, เพ็ญวิเชียร | Thailand |