Family name อมรรัตนกุลนิจ (อมรรัตนกุลนิจ 
) , all around the world, is a very rare last name. The cognomen อมรรัตนกุลนิจ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| อมรรัตนกุลนิจ | Thailand |