The Heretic Anthem is a track by American heavy metal band Slipknot, released on their second album Iowa in 2001. Known for its confrontational chorus and aggressive sound, it became a fan favourite and a staple of the band's live shows. Short excerpts later circulated on soundboards and in fan edits, where the raw vocal delivery made it useful as a punchy audio meme for intense moments. It remains popular because the track instantly signals Slipknot's confrontational style without needing a full song.