Last name จวนเพ็ญ (จวนเพ็ญ 
) , all around the world, is an extremely rare family name. The family name จวนเพ็ญ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, จวนเพ็ญ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| จวนเพ็ญ | Thailand |