In all the world, เพ็ญนภาวรรณ (เพ็ญนภาวรรณ 
) is a very rare dominantly feminine, but seldom boy's first name. The first name เพ็ญนภาวรรณ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare epicene name.
| VARIANT | COUNTRY |
|---|---|
| เพ็ญนภาวรรณ | Thailand |