Jinn (ジン) is a 4-member Japanese rock band. They are part of SMEJ's Palm Beach record label.The members of Jinn all attended the same high school, and formed the band in Tokyo in the summer of 2003. In March 2004, the band recorded a demo CD, 0~Zero~ (0～ゼロ～, 0~Zero~?), with 500 copies selling out quickly.
After that in 2005, the band recorded a mini album, Kotosabi no Ki (言錆の樹, Kotosabi no Ki?). In August 2006, the single Raion (雷音, Raion?) was released, which was featured as the final opening theme to the Blood+ anime series. On November 22 the same year, Jinn also released another single, Malachite (マラカイト, Marakaito?).
In 2007, Jinn performed the second opening theme to the Sunrise anime series Code Geass: Lelouch of the Rebellion, Kaidoku Funō (解読不能, Kaidoku Funō?), which was released on January 31, 2007. Their first full album, Lemmings (レミングス, Remingusu?), was released on February 28, 2007. Their second album, Qualia was released on February 6, 2008.
After no activity for 2 years, in 2010, they are releasing a mini album called Engine on July 14. Their single Hyakumankai Sukida to Itte comes from this album.