"Foolin'" is a 1983 single by English heavy metal band Def Leppard from their diamond album Pyromania.

When released as a single later that year, it reached #9 on the Mainstream Rock chart and #28 on the US Billboard Hot 100.

[5] The music video was shot in June 1983 at the Ritz Theatre in Elizabeth, New Jersey, and directed by David Mallet.

[6] The video shows Elliott escaping from his evil girlfriend in a fantasy sequence, interspersed with scenes of the band performing on a concert stage.

It features Billy Idol's then-girlfriend Perri Lister playing the harp with her eyes closed.