Family name Mattao (Mattao 
) , all over the world, is a very rare last name. The surname Mattao is characteristic of Tanzania, where it is a very rare surname, Netherlands, and Brazil, where it is an extremely rare surname. Very seldom, Mattao is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mattao | Brazil, Tanzania, Netherlands, France, India |