Peripheral ossifying fibroma (POF) is a non-neoplastic reactive gingival overgrowth occurring frequently in the anterior maxillary region. Occurrence of POF in mandible is uncommon as compared to maxilla. It represents up to 2% of all oral lesions involving gingiva that are biopsied. In this case report we are presenting a case report of POF in mandibular anterior region in a 65 year old female. This case report describes the clinical features, etiopathogenesis, histopathology and treatment.