Last name วงศ์เพ็ญ (วงศ์เพ็ญ 
, Wongpen 
) , across the world, is a rare surname. The surname วงศ์เพ็ญ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, วงศ์เพ็ญ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| วงศ์เพ็ญ | Thailand |
| Wongpen | United States, Thailand |