Surname 재인 (재인 
, Jae-In 
) , all over the world, is an extremely rare family name. The family name 재인 is habitual in Western Europe, particularly Germany, where it is an extremely rare surname. Much more prevalently, 재인 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 재인 | South Korea |
| Jae-In | Germany, Canada, United States |