Family name รัตนไตรมาส (รัตนไตรมาส 
, Ratanatraimas ) , across the world, is a very rare cognomen. The surname รัตนไตรมาส is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| รัตนไตรมาส, Ratanatraimas | Thailand |