Jung Whee-in (Korean: 정휘인; born April 17, 1995), known mononymously as Wheein, is a South Korean singer. She rose to prominence in 2014, as a member of the Korean girl group Mamamoo. In 2017, her song "Anymore" with Jung Key, topped the Gaon Charts. In April 2018, she made her debut as a solo artist with her digital single "Easy", peaking at number three in South Korea. In September 2019, Wheein released her first single album Soar.

In 2021, Wheein released her debut EP Redd, which peaked inside the top ten in Korea. In the same year she left RBW, and signed to The L1ve. In 2022, she released her second EP Whee, which reached number four on the Circle Album Chart. In 2023, she released her debut studio album, In the Mood.