Jeong Yun-o; born Jeong Jae-hyun, 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.
