Cognomen Mihaja (Mihaja 
) , around the world, is a rare last name. The surname Mihaja is habitual in Madagascar, where it is quite a rare surname, Indonesia, where it is a very rare surname, and France, where it is an extremely rare surname. Also, Mihaja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mihaja | Madagascar, United States, France, Indonesia, Canada |