Last name จันทรเพชร (จันทรเพชร 
, Jantarapet 
, Jantarapetch ) , around the world, is a rare family name. The cognomen จันทรเพชร is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, จันทรเพชร is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chantharaphet, Jantarapetch, จันทรเพชร | Thailand |
| Jantarapet | United States, Thailand |