Surname บรรจงรัตน์ (บรรจงรัตน์ 
, Banjongrat 
, Bunjongrat ) , around the globe, is a rare last name. The surname บรรจงรัตน์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, บรรจงรัตน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bunjongrat, บรรจงรัตน์ | Thailand |
| Banjongrat | China, Thailand |