Family name Ustárroz (Ustárroz 
) , all around the world, is an extremely rare cognomen. The surname Ustárroz is habitual in Spain, where it is a very rare surname, and Brazil, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ustárroz | Brazil, Spain |
| alberto ustárroz (b. 1948) |
|
|
| maría gembero ustárroz ES (b. 1959) |
|