Kim Seon-yu
Birthday: 3/20/2008
Gender: Female
Place Of Birth: Ponam-dong, Gangneung, Gangwon-do, South Korea

Kim Seonyou (김선유) is a South Korean rapper and singer under M25. She participated on the survival shows CAP-TEEN and My Teenage Girl, where on the finale, she ranked 2nd overall, making her a member of CLASS:y.