Last name Avendaño Haro (Avendaño Haro 
) , throughout the world, is a very rare cognomen. The cognomen Avendaño Haro is characteristic of Latin America and the Caribbean, particularly Ecuador, where it is a very rare surname, and Chile, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Avendaño Haro | Ecuador, Chile |