Cognomen จรัสชัยพจน์ (จรัสชัยพจน์ 
) , around the globe, is an extremely rare family name. The cognomen จรัสชัยพจน์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| จรัสชัยพจน์ | Thailand |