Family name นวลสวรรค์ (Nouansavanh 
, นวลสวรรค์ , Nuansawan ) , around the globe, is quite a rare cognomen. The surname นวลสวรรค์ is characteristic of Laos, where it is quite a common surname, Thailand, where it is a very rare surname, and Canada, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in Laos, Thailand, and the United States. Much less frequently, นวลสวรรค์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Nouansavanh | Laos, United States, Thailand, Canada |
| นวลสวรรค์, Nuansawan | Thailand |