Cognomen Loujaina (Loujaina 
, Лужаина 
) , around the world, is a very rare last name. The surname Loujaina is habitual in Tunisia, where it is a rare surname, and Russia, where it is a very rare surname. Also, Loujaina is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Loujaina | Tunisia, Morocco |
| Лужаина | Russia |