Background: Mirizzi syndrome is a type of biliary obstruction caused by an impacted stone in the gallbladder neck or cystic duct that causes and extrinsic obstruction of the common bile duct, this condition if left untreated can lead to duct erosion, fistula, and cholangitis. Preoperative diagnosis is difficult since if not diagnosed correctly can elevate the risk of intraoperative bile duct injury. Case presentation: We present the case of a 61-year-old patient, she presented to our hospital with obstructive jaundice, and a type III Mirizzi syndrome was identified. Preoperative diagnosis was completed, and she was successfully treated using a gallbladder free flap. On follow-ups, the patient is doing well. Conclusion: Mirizzi Syndrome is a rare syndrome that can lead to anatomical disturbances and surgical difficulties due to the hostile territory it creates.