Tiger JK is a South Korean rapper, record producer and entrepreneur best known as a founding member of Korean hip hop group Drunken Tiger. He has also founded two record labels, Jungle Entertainment and Feel Ghood Music. He is currently a member of hip hop trio MFBTY.

He is considered a highly influential figure in the development of Korean hip-hop and is credited with helping bring the genre into the Korean mainstream. The Los Angeles Times referred to him in 2011 as "perhaps the most popular Korean rapper in America, Asia and the world."