JJ or jj may refer to:
Wayne Lim Jun Jie (simplified Chinese: 林俊杰; traditional Chinese: 林俊傑; pinyin: Lín Jùnjié; born 27 March 1981) better known by his stage name JJ Lin, is a Singaporean singer, songwriter, record producer, and actor.
J.J Rendón on Facebook
John Joseph Feild (born 1978) is a British-American film, television and theatre actor. He started his television career in 1999. Feild played Fred Garland in Philip Pullman's The Ruby in the Smoke and The Shadow in the North television adaptations.
Jyrki Juhani Järvilehto (Finnish pronunciation: [ˈjyrki ˈjærvilehto]; born 31 January 1966), better known as "JJ Lehto", is a Finnish racing driver.
JJ Aldrich (born September 29, 1992) is an American mixed martial artist who competes in the Strawweight division.
JJK Jyväskylä (JJK) is a Finnish football club, based in Jyväskylä. It currently plays in the Finnish second highest league Ykkönen.
JJCC (pronounced J-J-C-C; Hangul: 제이제이씨씨) is a six-member South Korean hip hop boy band formed under the management of Jackie Chan Group Korea.
James Edward "JJ" Hickson Jr. (born September 4, 1988) is an American professional basketball player who currently plays for Leones de Ponce of the Baloncesto Superior Nacional (BSN).