Kevin J. Mahoney (September 6, 1965 – October 14, 2011) was an American singer. He is best remembered as the vocalist of Siege, a pioneering Massachusetts-based hardcore punk band whose speed and discord influenced the formation of the grindcore and powerviolence subgenres of punk rock and heavy metal. Mahoney's incongruous lead vocal style also influenced the development of these genres.Mahoney was a member of Siege from 1983 to 1985, their main productive years. He also led the group The Spoils with Siege drummer Rob Williams from 2006 to 2008.