Last name Diaz Loayza (Diaz Loayza 
) , all over the world, is a very rare cognomen. The last name Diaz Loayza is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname, Ecuador, and Peru, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Diaz Loayza | Ecuador, Chile, Peru |