Cognomen Sumiji (Sumiji 
) , in the entire world, is a very rare last name. The cognomen Sumiji is habitual in Japan, where it is a very rare surname, and India, where it is an extremely rare surname. More prevalently, Sumiji is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sumiji | Japan, Indonesia, United States, India, Brazil |