Objective: The present study has been carried out on dry mandibles to determine the accurate position of mandibular foramen from various landmarks; anterior border of ramus, posterior border of ramus, mandibular notch, base of mandible with the suitable data. Material and Methods: The study was conducted in 50 adult dry human mandibles of unknown sex and age collected from the Department of Anatomy, Dr.S.N.Medical College Jodhpur and JNUIMSRC Jaipur for its position using Digital Vernier Caliper in mm. Mandibles with sockets for third molar teeth, those in regular shape, and devoid of deformities were selected. Measurements were recorded to the nearest millimeter.Results: The average distance of mandibular notch to mandibular foramen was 17.22 ± 0.732mm(right side) and 17.19 ± 0.867mm(left side); from the anterior border of ramus to mandibular foramen was 15.95 ± 0.506mm(right side) and 16.29 ± 0.550 mm(left side); from the posterior border of ramus to mandibular foramen was 15.68 ± 0.400mm(right side) and 15.93 ± 0.402 mm(left side); from the base of mandible to mandibular foramen was 31.02 ± 1.821mm(right side) and 31.52 ± 1.773mm(left side); respectively. Lingula is used as a key landmark to measure all the dimensions. Conclusion: These values tell us that mandibular foramen is situated almost at the same distance on both the sides. A prior knowledge of such variations will help the dentists and surgeons to locate the Mandibular foramen with more precision for successful Inferior Alveolar Nerve block.