JYJ (formerly known as Junsu/Jejung/Yuchun in Japan) was a South Korean boy band formed in 2010 by Kim Junsu, Kim Jae-joong, and Park Yoo-chun, the three former members of TVXQ. Their group name is taken from the initial letters of each member's names.

Kim Jun-su (Korean: 김준수; born December 15, 1986 [A][1][2]), known mononymously as Junsu or known under the stage name XIA (/ ʃiˈɑː / SHEE-ah; 시아) is a South Korean singer-songwriter, dancer and musical actor. He is a member of JYJ, and was one of the original members of boy band TVXQ, where he was formerly known by the stage name Xiah Junsu (시아준수).

This is the discography of South Korean trio JYJ (formerly known as Junsu/Jejung/Yuchun in Japan). Formed in 2010, the group consists of Jaejoong, Yoochun and Junsu, who were formerly founding members of SM Entertainment's five-member boy band TVXQ.

金俊秀（ 韓語： 김준수 Gim Joon Su ，英語： Kim Jun Su ，1986年12月15日 — ），藝名細亞俊秀（ 韓語： 시아준수 Si Ah Jun Su ，英語： XIA Junsu、XIAH Junsu ），韓國男歌手、演員，前韓國流行演唱組合東方神起的成員。

— He is a lead vocalist, main dancer, and maknae in JYJ since their debut in April 2010. — Family: father Kim Jin-suk (김진석), mother Yoon Young-mi (윤영미) who is a former Miss Korea contestant, twin brother Kim Moo-young (김무영), younger cousin and former MOMOLAND member Taeha (김태하).

金俊秀（XIA），1986年12月15日出生于韩国，音乐剧演员、歌手、词曲作者、音乐制作人、韩国水原蓝翼FC MEN明星足球队创建人兼队长、济州岛酒店Toscana创建者。 2003年，作为东方神起成员出道，在组合中担任主唱。 2010年4月，东方神起停止活动，以JYJ成员身份重新出发，却遭到韩国和日本原经纪公司联手封杀（详见：东方神起解约事件）。 2010年1月，以音乐剧《莫扎特》作为音乐剧演员出道， ... >>> 金俊秀（XIA），1986年12月15日出生于韩国，音乐剧演员 …

JYJ currently consists of 2 members: Jaejoong and Junsu. The group debuted in April 2010 after the 3 mentioned members left TVXQ . They are under C-JeS Entertainment.

JYJ was a male duo under C-JeS Entertainment. Originally a three-member group consisting of former TVXQ! members Jaejoong, Junsu, and Yoochun, they debuted in Japan on September 8, 2010 with the mini album The... before subsequently releasing their international debut album The Beginning a month later, and their Korean debut album In Heaven on ...

Kim Jun Su (김준수), also known as Xiah Junsu or simply XIA (시아), is a South Korean singer-songwriter and actor under Palmtree Island. He is one half of the duo JX and a former member of the boy groups JYJ and TVXQ!. He first debuted as a soloist in Japan on May 26, 2010 with the digital single "Xiah".

Kim Jun-su (Korean: 김준수; born December 15, 1986), known mononymously as Junsu or known under the stage name XIA (/ ʃiˈɑː / SHEE-ah; 시아) is a South Korean singer-songwriter, dancer and musical actor. He is a member of JYJ, and was one of the original members of boy band TVXQ, where he was formerly known by the stage name Xiah Junsu (시아준수).