Family name Jaehyun (재현 
, Jaehyun 
) , in the world, is a rare surname. The family name Jaehyun is habitual in Indonesia, where it is a very rare surname, China, and the United States, where it is an extremely rare surname. Much more frequently, Jaehyun is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 재현 | South Korea |
| Jaehyun | South Korea, China, United States, Singapore, Indonesia |