"Smash It Up" is a song by English punk rock band the Damned, released as a single on 12 October 1979 by Chiswick Records.

[1] The single was the second release from the band's third studio album Machine Gun Etiquette (1979), where it was listed as "Smash It Up (Part II)".

It is structured in two-part form: a melodic instrumental introduction (written in homage to Marc Bolan after his tragic death) segueing into an energetic pop-punk song.

[6] In November 2004, Ace Records reissued the single on CD, with alternate versions of the song (including the previously unreleased third and fourth parts of "Smash It Up") and a video, directed by Martin Baker, added.

The Damned performed "Smash It Up" (as well as "I Just Can't Be Happy Today") on the BBC2 television show The Old Grey Whistle Test in 1979.