Lee Min-Woo (born July 28, 1979) is a singer and member of Korean boy band Shinhwa. Lee was the fourth member picked for the group. Discovered as a student at JunJoo Fine Arts School, he was performing with his dancing group "Dicky Ducky" at an Everland dancing competition and was spotted by an SM Entertainment scout.

As part of Shinhwa, he recorded eight studio albums as a vocalist and a rapper. He is still part of the group to this day. He started his solo act in 2003, and has released two studio albums. As a solo artist, he is known as M. He has also appeared in Korean television dramas and movies.