Cognomen Arwai (Arwai 
) , all over the world, is a very rare surname. The surname Arwai is habitual in Myanmar, where it is a rare surname, and the United States, where it is an extremely rare surname. Likewise, Arwai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Arwai | China, Myanmar, United States |