NCT U is the first sub-unit of the South Korean boy group NCT (2) formed by in 2016. All the members of NCT are part of the line-up, members change depending on the song's concept. They debuted on April 9, 2016 with the single .

Members: Johnny (쟈니), Taeyong (태용), Yuta (유타), Kun (쿤), Doyoung (도영), Ten (텐), Jaehyun (재현), Jungwoo (정우), Xiaojun (샤오준), Hendery (헨더리), Renjun (런쥔), Jeno (제노), Haechan (해찬), Jaemin (재민), Yangyang (양양), Chenle (천러), Jisung (지성)

Former members: Taeil (태일), Lucas (루카스), Shotaro (쇼타로), Sungchan (성찬), Mark (마크), Winwin (윈윈)