Last name สุนทรัตน์ (สุนทรัตน์ 
, Suntarat 
) , in the entire world, is a rare family name. The surname สุนทรัตน์ is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, สุนทรัตน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สุนทรัตน์ | Thailand |
| Suntarat | United States, Thailand, India |