Jung Jaehyun
- Actor
- Writer
- Soundtrack
![A search takes place for "M" who wrote something on the community board of Seoyeon University's website. The writing turned the university upside down.](https://m.media-amazon.com/images/M/MV5BZmQ5N2E2ZjctNDFjYy00ZWM1LWI0NjctMjA4ODg1NmFmMWRmXkEyXkFqcGdeQWRpZWdtb25n._V1_QL75_UX500_CR0,0,500,281_.jpg)
Jeong Yoon-oh, born Jeong Jae-hyun (February 14, 1997), better known by his stage name Jaehyun, is a South Korean singer, rapper and actor. He is best known as a member of the South Korean boy group NCT and its sub-units NCT U and NCT 127. Jaehyun made his debut in April 2016 as a member of rotational unit NCT U, became a member of Seoul-based fixed unit NCT 127 in July 2016. He has been a host of Inkigayo since October 2019.