Lee Joon (born Lee Ju-hyeon on February 7, 1988) is a South Korean singer, songwriter, actor, and record producer. He is a former member of the South Korean boy group MBLAQ, and is currently active as a solo artist.

Lee Joon began his music career in 2009 as a member of MBLAQ. The group released their debut album “Y” in 2009, which was a commercial success. MBLAQ went on to release several more successful albums, including “BLAQ” (2012), “Sexy Beat” (2013), and “Mirror” (2014).

In 2015, Lee Joon left MBLAQ to pursue a solo career. He released his debut solo album “FM” in 2016, which was followed by his second album “This Is…” in 2017. Lee Joon has also written and produced songs for other artists, including Hyuna and Chungha.