Hwang So Yoon, also known as So!YoON! (b. May 23, 1997), is a singer-songwriter from South Korea most well known for being the lead singer and guitarist for indie rock band SE SO NEON.

Hwang first became interested in the blues genre while in middle school and started learning guitar and writing lyrics. She subsequently recorded a demo and formed Se So Neon in 2016 alongside drummer 강토 (Kang To). The band began to play around Hongdae, a city in South Korea regarded as the hotbed for indie and underground music.

Known for her distinctly deep voice, Hwang and her band have started cultivating a strong following as one of the South Korea’s most promising indie rock bands.