Kang Chang-mo (), better known by his stage name KCM (), is a South Korean singer. He debuted in 2003 with the song "I Know", from the soundtrack to the Korean drama, Punch ().
On January 13, 2022, Kang has recently registered for marriage with his non-celebrity girlfriend who is 9 years younger than him. The wedding ceremony has been postponed due to the COVID-19 situation. On March 19, 2025, it was revealed that Kang is the father of two daughters and that he had registered his marriage in 2021. The couple welcomed a third child, a boy, on December 20, 2025.