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