Park Yoo-chun (; born June 4, 1986), simply known as Yoochun, is a South Korean singer, songwriter, actor, dancer, and model. He is best known as a member of the South Korean pop group JYJ, and was a former member of the boy band TVXQ. Park Yoo-chun is also known by the stage names Micky Yoochun (in South Korea), Yuchun (in Japan), and 有天 (in China). However, after he left his previous band, TVXQ, he is now using Park Yoochun (JYJ) instead of Micky Yoochun (TVXQ).

Park Yoo-chun (; born June 4, 1986), simply known as Yoochun, is a South Korean singer, songwriter, actor, dancer, and model. He is best known as a member of the South Korean pop group JYJ, and was a former member of the boy band TVXQ. Park Yoo-chun is also known by the stage names Micky Yoochun (in South Korea), Yuchun (in Japan), and 有天 (in China). However, after he left his previous band, TVXQ, he is now using Park Yoochun (JYJ) instead of Micky Yoochun (TVXQ).