Family name ทรงรัตนตรัย (ทรงรัตนตรัย 
) , in the entire world, is an extremely rare cognomen. The family name ทรงรัตนตรัย is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ทรงรัตนตรัย | Thailand |