JYJ (formerly known as Junsu/Yuchun/Jejung in Japan) is a South Korean pop group formed in 2010 by Jaejoong, Yoochun, and Junsu, the three former members of TVXQ. Their group name is taken from the first letters of each member's names. The trio are managed by C-JeS Entertainment.

In April 2010, they released their debut record, the Japanese EP The..., which topped the Japanese Oricon Albums Chart. Their subsequent releases, including their global debut album, The Beginning (2010) and their second studio album and first Korean full-length album, In Heaven (2011), all debuted at number one on the Korean Gaon Album Chart.