Abstract Adenomatoid Odontogenic Tumor (AOT) is benign epithelial lesion of odontogenic origin derived from complex system of dental lamina remnants. The lesion is well known for various clinical and histopathological appearances and so it is has been given the title 'master of disguise'. It is well-recognised as a leisurely growing benign tumor which is not rare now as it was previously reported. This lesion is grouped into three variants of which the most common variant is follicular type which often presents as dentigerous cyst clinically because it surrounds an impacted tooth. We report an AOT of mandible in a 14-year-old male who reported to our department and was provisionally diagnosed as unicystic ameloblastoma or dentigerous cyst. The article also covers a review of literature on the tumor. Clinical, radiological, histopathological characteristics and treatment modality of the case have been stressed upon. Key words: Adenomatoid odontogenic tumor, benign tumor, follicular type.