Throughout the world, Mareina (Mareina 
, Мареина 
) is a rare female forename. The forename Mareina is habitual in South Africa, where it is a very rare female name, Egypt, and Mexico, where it is an extremely rare feminine name. Also, Mareina is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Mareina | South Africa, Egypt, Mexico, United States, Venezuela |
| Мареина | Russia |