Crust may refer to:Geology and soil science:Crust (geology), the outer solid layer of a planetContinental crustOceanic crustSoil crust Music:Crust punk, a hardcore punk / extreme metal fusionCrust (band), a psychedelic Texas bandCrust (EP), an EP by Brazilian metal band SarcófagoCrust (album), an album by Italian metal band Sadist"...Crust", a song on that album MedicineCrust (dermatology), a secondary skin lesion PeopleCrusties a subculture… (More on Crust)