Around the globe, 周一郎 (周一郎 
) is a very rare boy's first name. The first name 周一郎 is habitual in Eastern Asia, particularly China, where it is an extremely rare male name. Very seldom, 周一郎 is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| 周一郎 | China |