The authors present a case of osteoma of the mandible. Osteomas are solitary lesions occurring predominantly in the skull and many authors believe that most osteomas in the maxillofacial areas are reactive bone hyperplasia or advanced ossifications. In some countries the prevalence of the osteoma is about 1% of all patients in the ENT clinics. Malignant transformation has not been described and surgery of the lesion should be conservative and consist essentially of enucleation.