Morganella morganii is a gram negative pathogen and may cause potentially lethal disease especially in patients with underlying or immunosuppressive disease. It is commonly found in long-term urinary catheter used and immune system deficiency patients as nosocomial disease. Involving other systems such as skin, skeletal system and central nervous system can be seen too. Sporadic occurrence is rare and can be seen in any system by various causes like AIDS, snake bites and poisoning. In this case we present sporadic Morganella morganii infection on sinonasal region with the presence of sinusitis, sino-cutaneous fistula, preseptal cellulitis and hard palate defect on 58 year old male diabetic patient. Microbiological assessment from open wound and sinuses were reported as Morganella morganii. To our knowledge, this is the first case of sino-nasal Morganella morganii infection with sino-cutaneous fistula, preseptal cellulitis and maxillofacial bone destruction.