Lee Kwang-soo (Korean: 이광수) is a South Korean actor, entertainer, and model. He made his acting debut in the sitcom Here He Comes (2008) and received further recognition for his roles in medical melodrama It's Okay, That's Love (2014), neo-noir film Confession (2014), black comedy film Collective Invention (2015), sitcom The Sound of Your Heart (2016), drama Live (2018), and human comedy film Inseparable Bros (2019). Lee was a regular cast member of the South Korean variety show Running Man from June 2010 until May 2021, while his last appearance on the show was aired on June 13, 2021.