Ha Sung Woon (하성운; or simply Sungwoon) is a South Korean singer under Star Crew Entertainment. He is a member of the boy group HOTSHOT. He is known for entering Produce 101 Season 2 with fellow member Roh Tae Hyun (Kid Monster) and finishing 11th, becoming a member of Wanna One.
Following the conclusion of his Wanna One activities, he made his solo debut on February 28, 2019 with the mini album My Moment.
He went on to Division of Entertainment in Broadcasting, major in K-Pop Performance and graduated from Dong-ah Institute of Media and Arts in February 2019.