Anthrax are an English anarcho-punk band formed in Gravesend, Kent, in 1980. They recorded their first demo in 1981 and went on to release two 7" EPs on Crass Records and Small Wonder Records. They appeared on compilations released by Crass Records, Mortarhate Records and Fightback Records. They toured outside the UK twice in the Netherlands with Dutch band The Ex.

In 2007, the band issued a compilation album, One Last Drop, which included demos, both EPs, the Mortarhate compilation track and two live tracks.

The band reformed in 2010, releasing new (and debut) album All for the Cause in 2012. Two split singles followed in 2015.