Benign bony exostosis can be present in the maxilla or mandible. They are non-odontogenic sclerotic lesions which present as bony outgrowths on the jaws. On the lingual aspect of the mandible, these benign bony exostoses resemble peripheral osteomas and when present adjacent to bicuspids they are known as torus mandibularis (TM). Usually these TM are small, bilateral and asymptomatic. This article presents an atypical case of large nodule of unilateral TM associated with discomfort in a 46-year-old male patient with partially edentulous jaws. The bony outgrowth was surgically removed and follow up period of 6 months was uneventful. Review of the literature was undertaken for various etiological factors, clinical features and management of torus mandibularis.