Seo Joo Hyun (서주현), popularly known as Seohyun, is a South Korean singer and actress. She debuted in 2007 as the maknae and lead vocalist of Girls' Generation under SM Entertainment.
Seohyun branched into acting in 2013 with a small role in the television drama "Passionate Love." She has since appeared in the popular dramas "Moon Lovers: Scarlet Heart Ryeo" (2016), "Ruby Ruby Love" (2017), "Bad Thief, Good Thief" (2017), "The Time" (2018) and "Jinxed at First" (2022).
Seohyun made her solo debut with the mini album "Don't Say No" on January 17, 2017.
In October 2017, Seohyun left SM Entertainment to pursue acting but promised to always be with her fellow members when needed. She joined Namoo Actors in 2019 to focus on her acting career.