Kim Yuna (; born March 11, 1974), also known as Kim Yoon-ah, is a South Korean singer and songwriter. She is known as the lead singer in the modern rock group Jaurim. She also released several solo albums. She also made her musical theatre debut in 2015, playing the role of Mrs. Danvers from 2015 Korean production of Rebecca the musical, though after the premiere performance she left the production due to severe laryngitis.
In 2006, she married dentist & television presenter Kim Hyung-gyu. They have one child.