Family name Jung-In (정인 
, Jung-In 
) , throughout the world, is an extremely rare cognomen. The family name Jung-In is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Predominantly, Jung-In is the forename as well as the last name. Parts of the name also exists independently as a last name Jung, and a last name In.
| VARIANT | COUNTRY |
|---|---|
| 정인 | South Korea |
| Jung-In | France, South Korea, United States, Thailand |