Cognomen นิวรัตน์ (นิวรัตน์ 
, Niwarat 
, Newrat 
) , across the world, is a rare last name. The last name นิวรัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Also, นิวรัตน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| นิวรัตน์, Niwrat | Thailand |
| Niwarat | Malaysia, Thailand |
| Newrat | India, Thailand |