Background:Spontaneous gallbladder perforation(GBP)is an uncommon diagnosis.This study presented the experience of managing spontaneous GBP over nine years at a large,tertiary care university hospital in north India and investigated the outcomes and treatment strategies.Methods:A retrospective review of prospectively maintained digital database of consecutive patients was performed.All patients received medical and/or surgical treatment for spontaneous GBP in our depart-ment between January 2010 and June 2018.Results:We identified 151 patients(81 females and 70 males)with mean age of 53 years.Most common presenting features were pain(96.7%),fever(54.3%)and jaundice(31.1%).Most common cause was gall-bladder stones(84.8%)followed by common bile duct stones(30.5%),xanthogranulomatous cholecystitis(17.9%)and malignancy(11.9%).As per Niemeier classification,8.6%had type 1 GBP(free perforation in peritoneal cavity),76.2%had type 2 GBP(localized perforation)and 13.2%had type 3 GBP(cholecysto-enteric fistula).About 60%of the perforations were diagnosed preoperatively.Type 1 was more com-mon in patients with diabetes and also had the worst prognosis.Surgery was performed in 109 patients(72.2%).Seven patients(4.6%)had a postoperative morbidity of Clavien-Dindo Ⅲ or higher.There were three mortalities in patients who underwent surgery.Conclusions:High index of suspicion is required for preoperative diagnosis of GBP,especially in types 2 and 3.Laparoscopic cholecystectomy can be difficult in these patients and patients may require open or partial cholecystectomy.Early diagnosis and step-up approach for the treatment of GBP is critical.