Isak N Jiyeon (\uc774\uc0ad N \uc9c0\uc5f0) was a Korean female duo formed by SM Entertainment in 2002 that has since been disbanded. Jiyeon was involved in SM's project named The Grace, a four-member Korean girl group that sings, dances and acts. Isak was featured in the SM Town albums and videos and continued to do a variety of work, such as being DJ and VJ for Arirang TV, MC work for various networks, and taking on small acting roles on network television.