This Heat were an English experimental rock band, formed in early 1976 in Camberwell, London by multi-instrumentalists Charles Bullen (guitar, clarinet, viola, vocals, tapes), Charles Hayward (drums, keyboards, vocals, tapes) and Gareth Williams (keyboard, guitar, bass, vocals, tapes).

This Heat were active during the ascendancy of British punk, but stood apart from that scene due to an experimental and confrontational approach. This Heat's commercial success was limited and, during the group’s existence, their discography consisted of only two albums and an EP. The band would influence genres such as post-punk, industrial music, and post-rock.

Williams died of cancer in 2001. From 2016 until 2019, Bullen and Hayward reunited, playing under the name This Is Not This Heat.