Outbreak Festival is an English hardcore punk festival and concert promotion company founded by Jordan Coupland and Lee Follows in 2011. Beginning at the Broomhall Centre in Sheffield, the festival has moved between a number of different venues and cities throughout its existence: being held in Leeds from 2012 to 2019, at the Well (2012), the Vox (2013–2014) and Canal Mills (2015–2019); and in Manchester from 2022, at Bowlers Exhibition Centre and Depot Mayfield (2023). Over its 13 date runtime, the festival has become one of the most prominent events in hardcore punk in the United Kingdom, hosting the genre's biggest native acts like Higher Power, Malevolence and the Flex, as well as fundamental international groups including the Cro-Mags, Gorilla Biscuits, Terror, Turnstile, Trapped Under Ice and Code Orange.