Jang Woohyuk (장우혁) is a South Korean rapper, choreographer, and DJ under WH Creative. He is best known for being a member of the boy group H.O.T. Following their disbandment in March 2001, he, along with former members Tony An and Lee Jae Won, formed the group jtL.
Following jtL's disbandment in 2003, he debuted as a solo artist on September 12, 2005 with the album No More Drama. As a DJ, he goes by the stage name XXXV.