Background: Peritonitis denotes inflammation of the peritoneal cavity and this may be caused by bacteria or by irritation of extravasated secretions. The present study was conducted to assess cases of bacterial peritonitis due to gastro intestinal perforations. Materials & Methods: 30 patients of acute bacterial peritonitis secondary to gastro intestinal tract perforations of both genders were included. At surgery, the pathology was identified and treated accordingly. Mortality rate was recorded according to Manheim’s Peritonitis Index. Results: Out of 30 patients, males were 17 and females were 13. Cases were of gastric perforation in 5, duodenal in 8, jejunal in 4, gall bladder in 3, ileal in 2, appendicular in 6 and colonic in 2. The difference was significant (P< 0.05). There was 1 appendicularand 1 ileal death in patients with score 15-25 and 1 appendicular death in patient with score >26. The difference was significant (P< 0.05). Conclusion: Maximum deaths were seen in appendicular perforation according to manheimm’s score.