Ice-nine is a fictional solid polymorph of water from Kurt Vonnegut's novel, Cat's Cradle. Ice-nine may also refer to: Ice IX, a form of solid water stable at temperatures below 140 K Ice Nine (video game), a first-person shooter video game for the Game Boy Advance ICE-9, a fictional computer virus in the American science fiction crime drama television series Person of Interest Music "Ice 9", the second track on Joe Satriani's 1987 album, Surfing with the Alien ICE-9 (album), an instrumental album by Susumu Hirasawa Kerach 9 (English: Ice 9), an Israeli Rock band Lyod 9 (English: Ice 9), a 2001 album by Russian rock band Smyslovye Gallyutsinatsii See also 9ice, Nigerian musician, songwriter and dancer Ice Nine Kills, an American heavy metal band