This document reports on 3 cases of unicystic ameloblastoma that were initially misdiagnosed. Case 1, in a 58-year-old female, was diagnosed clinically as a residual cyst but was found to be a unicystic ameloblastoma. Case 2, in a 25-year-old female, was diagnosed as a dentigerous cyst but was also a unicystic ameloblastoma. Case 3, in a 13-year-old female, was diagnosed as a keratocystic odontogenic tumor but was additionally a unicystic ameloblastoma. The document emphasizes that unicystic ameloblastoma can mimic features of odontogenic cysts and should