Lee Sung-min is a South Korean actor. He is best known for his supporting roles on television and film, notably his much-praised performances in Golden Time (2012), Broken (2014), Misaeng: Incomplete Life (2014), and Reborn Rich (2022). Lee has also received critical acclaim for his role in the 2018 espionage film The Spy Gone North, for which he won Best Actor at the 55th Baeksang Arts Awards.

Golden Time is a 2012 South Korean television series starring Lee Sun-kyun, Hwang Jung-eum, Lee Sung-min and Song Seon-mi. It aired on MBC from July 9 to September 25, 2012 on Mondays and Tuesdays at 21:55 for 23 episodes.