"This Means War" is a song by American heavy metal band Avenged Sevenfold from their 2013 album Hail to the King.
Various publications have lambasted the track for its uncanny similarities to Metallica's 1993 single "Sad but True". The song was singled out by Machine Head's vocalist Robb Flynn as a ripoff. Users on Ultimate Guitar voted the song into the site's "Worst Guitar Riffs" list.
Although the song was not released as a single, it placed on several American Billboard rock charts and received a music video. Directed by Andrew Baird, it was released July 5, 2014. The unreleased director's cut of the music video was released in 2017. The song was featured in the video game WWE 2K15.