Accessory mental foramen of the mandible is not a common anatomical variation. Presence of any such variation during implant placement, regional anesthesia and surgical correction of the jaw deformities may develop neurovascular complications. In order to avoid complications, the probability of the existence of an accessory mental foramen should be kept in mind. During routine osteology demonstration classes we noticed an accessory mental foramen on both sides of mandible. So particular attention should be paid to the possible occurrence of one or more accessory mental foramen during surgical procedures involving the mandible. The clinical implications of such variation are discussed in this paper.