Surname Biarreta (Biarreta 
) , worldwide, is a very rare family name. The surname Biarreta is habitual in Latin America and the Caribbean, particularly Venezuela, where it is a rare surname, and Colombia, where it is a very rare surname. Much less frequently, Biarreta is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Biarreta | Colombia, Venezuela |