Disembowelment (often written diSEMBOWELMENT) was an Australian death/doom metal band from Melbourne that was formed in 1989 after the two piece grind band Bacteria featuring drummer Paul Mazziotta and guitarist/vocalist Renato Gallina changed its name and musical style. With Dean Ruprich from Necrotomy providing bass, the band released its first demo, "Mourning September" in 1990.