Mucor mycosis of maxilla is caused by filamentous fungi belonging to mucoracea family. This fungus is ubiquitous and can be found throughout the world on bread, air, soil etc. Rhinocerebral form of mucor mycosis is rather common. In this case report a detailed description of a patient with mucor mycosis involving maxilla with associated palatal destruction is given, along with a review of published literature on this topic. Rhinocerebral mucor mycosis is common in diabetics and immuno compromised individuals. The sheer inefficiency of phagocytic mechanism in diabetics help these organism to invade and proliferate. This condition is rather sinister because of the ability of mucor to invade other areas via peri vascular spread.