Ki Hui-hyeon
- Birthday: 6/16/1995
- Place of birth: Namwon, North Jeolla, South Korea
- Fame for: Acting
- Also known as: 기희현
Biography
Ki Hui-hyeon, better known by the mononym Huihyun and former stage name Cathy, is a South Korean singer. She is best known as a member of the South Korean girl group DIA
