Misery Index is an American deathgrind band formed in 2001 in Baltimore, Maryland, United States, by Jason Netherton (vocals and bass guitar), Mike Harrison (vocals and guitar), and Kevin Talley (drums). From 2006–2010, its line-up consisted of Netherton on vocals and bass guitar, Sparky Voyles on guitar, Mark Kloeppel on vocals and guitar, and Adam Jarvis on drums. In 2010, Voyles left the band and was replaced by Darin Morris.