Lee Jung Shin is the bassist of the South Korean rock band CNBLUE. He joined CNBLUE in 2009, replacing bassist Kwon Kwang Jin shortly after their debut. He also serves as rapper and backup vocalist for the band.
Jung Shin made his acting debut in the 2012 KBS2 family drama Seoyoung, My Daughter.
On July 31, 2018, Lee enlisted in the military. After the completion of his service, he was officially discharged on March 19, 2020.