Lee Chang-sub
- Birthday: 1991-02-26
- Place of birth: Suwon, Gyeonggi, South Korea
- Also know as: 이창섭
Lee Chang-sub (이창섭) is a South Korean singer, songwriter, musical actor, and entertainer. He is well-known as the lead vocalist of the South Korean boy group, BTOB. He was the first member to debut his own solo album, "bpm 82.5," in Japan. Lee started his career in musicals in 2017.
