Identifying a duplicated gallbladder is a rather rare entity, but a well-described phenomenon within the current literature. Although this finding has been described in numerous case reports, management remains poorly defined and the diagnosis is often difficult. We present a case of a patient with a suspected duplicated gallbladder versus a choledochocele that was diagnosed later on with adenocarcinoma within a duplicated gallbladder during surgical management requiring extended hepatic resection for curative intent. This case emphasizes the importance of radiological techniques in diagnosing such rare cases and the surgical approach of managing adenocarcinoma in the presence of this rare anatomical malformation.