Jung Jin-woon was a member of a band called No Comment prior to his debut with the four-piece group 2AM in 2008. Their debut single This Song earned them a Best New Male Artist nomination at the 2008 Mnet KM Music Festival. In 2011, the group ranked 8th on Forbes Korea’s Power Celebrity list. That same year, Jung Jin-woon released his first solo single titled You Walking Toward Me, which he wrote and composed himself.

Jung Jin-woon made his acting debut in 2012 as one of the lead characters in the KBS2 series Dream High 2. In 2014, he joined the main cast of the hit tvN romantic comedy Marriage Not Dating, which earned him a Best Young Actor nomination at the 16th Seoul International Youth Film Festival. In 2016, he acted alongside Han Ye-seul and Sung Joon in JTBC’s quirky rom-com Madam Antoine. In 2018, he appeared in the SBS drama Let Me Introduce Her.

Jung Jin-woon enlisted for his mandatory military service in March 2019 and was discharged in October 2020. He is cousins with former Tahiti girl group member Miso.