Family name Duio (Duio 
) , in all the world, is a very rare last name. The cognomen Duio is characteristic of Malaysia, where it is a very rare surname, the United States, where it is an extremely rare surname, and India. Very seldom, Duio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Duio | India, United States, Brazil, Malaysia |