Mark Lee (born August 2, 1999), known mononymously as MARK, is a Canadian rapper and singer based in South Korea. He is a former member of the South Korean boy band NCT and its fixed sub-units NCT 127 and NCT Dream, as well as the supergroup SuperM. MARK made his solo debut on April 7, 2025, with his first studio album The Firstfruit. On April 3, 2026, MARK departed from NCT and SM Entertainment following the expiration of his contract on April 8.