Across the world, Itsuya (Itsuya 
) is a very rare male given name. The first name Itsuya is habitual in Eastern Asia, particularly Japan, where it is a very rare male name, and China, where it is an extremely rare male name. Very seldom, Itsuya is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Itsuya | Japan, China, Brazil |