Cognomen Mitio (ミチオ 
, Mitio 
) , worldwide, is quite a common last name. The surname Mitio is characteristic of Japan, where it is quite a rare surname, Papua New Guinea, and the United States, where it is an extremely rare surname. Much less frequently, Mitio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ミチオ | Japan |
| Mitio | United States, Bulgaria, Papua New Guinea, India, Brazil |