Despite anatomic proximity, communication between colon, urinary bladder, and umbilicus is very rare. We report a 54-year-old male who presented with drainage of feces from the umbilicus and urinary tract infection. Laparotomy showed a composite colovesicocutaneous fistula with involvement of the urachus. The pathology report confirmed diverticulitis complicated by fistula formation. Post-operative course was uneventful. At 6 months' follow-up the patient remains well with normal bowel function.