Ha Sung Woon (Korean: 하성운, born March 22, 1994) is a South Korean male singer. He was a member of the six-member boy band HOTSHOT under Star Crew Entertainment and served as the main vocalist. In 2017, he participated in the South Korean audition program 'PRODUCE 101 Season 2' and became a member of Wanna One, finishing in eleventh place, where he was also the main vocalist.
