Cognomen Dummai (Dummai 
) , in the entire world, is a very rare family name. The last name Dummai is habitual in Finland, where it is a rare surname, Thailand, where it is a very rare surname, and Nigeria, where it is an extremely rare surname. Very seldom, Dummai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dummai | Finland, Nigeria, Thailand, Brazil, United States |