Last name จันทรัตน์ (จันทรัตน์ 
, Jantarat 
, Chantarat 
, along with others...) , worldwide, is a common surname. The last name จันทรัตน์ is habitual in Thailand, where it is quite a common surname, and the United States, where it is an extremely rare surname. Much less frequently, จันทรัตน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| จันทรัตน์ | Thailand |
| Jantarat | United States, Thailand |
| Chantarat | United States, Thailand, New Zealand |
| Chantharat, Jantharat | Malaysia, United States, Thailand |
Chandarat, Chandtarat, Chantaratn, Chantarrat, Chantharatt, Chanthatarat, Chanthorat, Chanthrat, Chantrrat, Chuntarat, Chuntharat, Jantarath, Jantaratt, Jantharad, Jantratit, and Juntarat