Cognomen นิวาร (Niwar 
, นิวาร 
) , around the world, is a rare surname. The surname นิวาร is habitual in Malaysia, where it is a rare surname, Tunisia, and Iraq. Measured by absolute frequency, it is commonest in Indonesia, Malaysia, and India. More frequently, นิวาร is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Niwar | Malaysia, Indonesia, Iraq, Myanmar, India |
| นิวาร | Thailand |