B.O.Y (Korean: 비오브유, romanized: Biobeuyu; acronym of and pronounced as B. Of You), formerly known as Kim Kookheon x Song Yuvin (Korean: 김국헌x송유빈), was a South Korean pop duo formed by The Music Works in 2019, following the disbandment of the boygroup Myteen. The duo disbanded on April 30, 2021.