Killing Joke are an English post-punk band formed in October 1978 in Notting Hill, London, England; other sources report the band formed in early 1979. Founding members Jaz Coleman (vocals, keyboards) and Geordie Walker (guitars) have been the only constant members.

A key influence on industrial rock, their early music was described by critics Stephen Thomas Erlewine and John Dougan as "quasi-metal ... dancing to a tune of doom and gloom", which gradually evolved over the years, incorporating elements of electronic musicsynthpopgothic rock, and alternative rock, though always emphasising Coleman's "savagely strident vocals".

Finding modest commercial success, Killing Joke have influenced many later bands and artists, such as NirvanaMinistryAmenLamb of GodNine Inch NailsPorcupine Tree,Napalm DeathBehemothAmebixBig BlackSlipknotOpethMurderdollsGodfleshScornHole/Courtney LoveDead by AprilMarilyn MansonToolHelmetProngMetallica,PrimusJane's AddictionSoundgardenFoo FightersFaith No MoreNick HarperBlacklistShihadPitchshifterDas OathRammstein, and Korn, all of whom have at some point cited some debt of gratitude to Killing Joke.

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