Few examples of osteomas of the facial bones have been documented in the literature making them a rare condition. When found in the craniofacial skeleton, osteomas are benign, slow-growing osteogenic tumors of the bone that are distinguished by the growth of compact or cancellous bone. The case report in this article describes a peripheral osteoma near the angle of the mandible which was diagnosed incidentally by the cone beam computed tomography scan. We report a rare case of a solitary periosteal osteoma on the buccal aspect of the angle of the mandible in a 20-year-old man and also highlight the importance of advanced imaging modality in the diagnosis of bony lesions of craniofacial region.