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

• "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
• Ice Nine Publishing, music publishers for the Grateful Dead

• 9ice, Nigerian musician, songwriter and dancer
• Ice Nine Kills, an American heavy metal band

This disambiguation page lists articles associated with the title Ice-nine.
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