Raina (레이나) is a South Korean singer. She is a former member of the girl group After School and its sub-units After School Blue and Orange Caramel.
She made her solo debut on October 8, 2014 with the digital single "Reset".
On September 3, 2020, Raina was announced as a participant in the MBN variety show Miss Back, which will follow "a group of female singers who made their debut in idol groups but are slowly being forgotten in the minds of the public." The show is slated to premier sometime in October.