Cognomen Ereñú (Ereñú 
) , in the world, is an extremely rare last name. The family name Ereñú is characteristic of Latin America and the Caribbean, particularly Argentina, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ereñú | Argentina |
|
héctor ríos ereñú Argentinian military personnel, AR (b. 1930) |
|
| eduardo orduña ereñú (born 1981) (b. 1981) |
|
Ariel, Jimena, Vanesa, Victor, and Guillermina