Jung Whee-in (정휘인; born April 17, 1995 in Jeonju, North Jeolla, South Korea), better known mononymously as Wheein (휘인), is a South Korean singer. She is best known as a member and vocalist of South Korean girl group MAMAMOO. In April 2018, Wheein made her debut as a solo artist with her digital single "Easy" and in September 2019, she released her first single album, Soar.