Last name นิยมวรรณ (นิยมวรรณ 
, Niyomwan 
) , in the world, is a rare family name. The family name นิยมวรรณ is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Much less frequently, นิยมวรรณ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| นิยมวรรณ | Thailand |
| Niyomwan | Thailand, United States |