Family name Uaca (Uaca 
) , globally, is a rare last name. The last name Uaca is characteristic of Angola, where it is a rare surname, Costa Rica, where it is a very rare surname, and Brazil, where it is an extremely rare surname. Very seldom, Uaca is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Uaca | Brazil, Angola, India, Costa Rica |