Multiple angulated preoperative radiographs, careful exploration of the pulp chamber floor, together with the knowledge of canal morphology, are prerequisites for locating extra canals. Mandibular canines usually exhibit a single root and canal. The related literature reveals very few studies showing extra roots and canals in these teeth. This case report presents the successful root canal treatment of a rare occurrence in a mandibular canine of two roots and three canals. Keywords: aberrant root canal morphology, mandibular canine, multiple canals