Family name รัชนิกรเพ็ญ (รัชนิกรเพ็ญ 
) , all around the world, is an extremely rare cognomen. The cognomen รัชนิกรเพ็ญ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| รัชนิกรเพ็ญ | Thailand |