Cognomen จงกลรัตน์ (จงกลรัตน์ 
, Jongkonrat , Jongkolrat ) , around the world, is a rare family name. The last name จงกลรัตน์ is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Likewise, จงกลรัตน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jongkonrat, จงกลรัตน์, Jongkolrat | Thailand |
| Chongkonrat | Thailand, United States |