Cognomen รุ่งแสงจันทร์ (Moonlight 
, รุ่งแสงจันทร์, Rungsangjun 
) , all around the world, is a rare last name. The surname รุ่งแสงจันทร์ is habitual in Malaysia, where it is a rare surname, New Zealand, and Switzerland, where it is a very rare surname. Measured by absolute frequency, the name is most common in Malaysia, Indonesia, and China. Likewise, รุ่งแสงจันทร์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Moonlight | South Africa, India, Indonesia, Malaysia, China |
| Rungsaengchan, Rungsangjun | Thailand |