Around the world, นภชัย (นภชัย 
) is a very rare principally masculine, but very seldom female given name. The forename นภชัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare predominantly masculine, but very seldom girly name.
| VARIANT | COUNTRY |
|---|---|
| นภชัย | Thailand |
ผุยใจ, สุทธิสัย, and จิตต์เจริญธรรม