Cognomen จันทพจน์ (จันทพจน์ 
, Chantapot , Chanthapot ) , around the globe, is a very rare last name. The family name จันทพจน์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, จันทพจน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| จันทพจน์, Chanthapot, Chantapot | Thailand |