Gallbladder duplication is a rare congenital malformation with an incidence of 1 in 4000 autopsies. There is a classification for duplication of the gallbladder:  bi-lobed or double gallbladder. The first has a septum or invaginating cleft that separates the lumen into two chambers, and the second has two separate gallbladders with their own cystic ducts. Gallbladder diverticula, gallbladder fold, Phrygian cap, choledochal cyst, are some of the differential diagnoses for this pathology. The symptoms of gallbladder duplication are no different from that of the single gallbladder. The indication for surgery is still controversial, however, if it is necessary to remove one gallbladder, the removal of the other is suggested.