Cognomen 井辛人 (井辛人 
) , in all the world, is a very rare last name. The surname 井辛人 is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. More prevalently, 井辛人 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 井辛人 | China |