Family name Briaga (Briaga 
) , in the entire world, is a very rare last name. The surname Briaga is habitual in Philippines, where it is a very rare surname, Israel, and Brazil, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Philippines, Brazil, and Mexico. Much less frequently, Briaga is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Briaga | Philippines, Mexico, Israel, Brazil, Peru |