Cognomen Fonseca Baeza (Fonseca Baeza 
) , in the entire world, is an extremely rare family name. The cognomen Fonseca Baeza is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare surname, and Argentina, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Fonseca Baeza | Chile, Argentina |