O3ohn

Born on March 17, 1993, in Kwacheon, Oh Jun-ho, known professionally as O3ohn, is a Korean singer-songwriter. He began his musical journey in middle school, learning to play guitar in a band, initially as a hobby. He decided to pursue music seriously during his military service. In October 2016, he released his first EP, O, inspired by his own experiences and surroundings. In 2020, he participated in the folk musician survival show Focus on Mnet and tvN, finishing in third place. O3ohn has been actively releasing EPs, singles, compilation albums, and OSTs. His June 15, 2025, EP Two debuted at No. 80 on Bugs' Top 100 Albums chart after its release.