Surname 澤雄一郎 (澤雄一郎 
) , in all the world, is a very rare family name. The last name 澤雄一郎 is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. More frequently, 澤雄一郎 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 澤雄一郎 | China |