Family name Joaõ (Joaõ 
) , globally, is a rare surname. The cognomen Joaõ is characteristic of Angola, where it is a rare surname, and Brazil, where it is an extremely rare surname. Very seldom, Joaõ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Joaõ | Brazil, Portugal, Angola, South Africa, United States |