Background: Left sided gall bladder is a rare anomaly encountered by surgeons. Choledochal cyst with pancreas divisum is also rare anomaly as reported in various studies. Here we are reporting a case of left sided gall bladder associated with choledochal cyst and pancreas divisum. Case Report: We had a 48-year male patient with symptoms of recurrent upper abdominal pain. On magnetic resonance cholangiopancreatography, type 4a choledochal cyst with cystolithiasis with pancreas divisum was documented. Minor pancreatic duct stenting was done for recurrent acute pancreatitis. After stenting patient developed severe necrotizing pancreatitis and cholangitis, which was managed conservatively with multiple percutaneous drainage and segment 3 percutaneous transhepatic biliary drainage. Later he underwent cholecystectomy with choledochal cyst excision with Roux-en-Y hepaticojejunostomy. In post-operative period, drain was serous and removed on day 5 and discharged on post-operative day 7. Conclusion: Till date no such case of left sided gall bladder with choledochal cyst and pancreas divisum has been reported.