Aim:To evaluate and analyse the location and position of foramen ovale, jugular foramen and carotid canal morphometrically. Background: Since the articles about foramina mainly concentrate only on single foramen but this research is different in a way like analysing the three foramens present in the middle part of base of the skull with reference to their location and position in the skull. Reason: Evaluation of the location and position of foramen ovale, jugular foramen and carotid canal, morphometrically may predict the anatomical variation of the relative location. Materials and Methods: 60 dry unsexed skulls from the department of anatomy, Saveetha dental college, Chennai was used in the study.The distance of foramen Ovale, Jugular Foramen and Carotid canal from the mastoid process on the left sidewas measured using manual vernier caliper, the readings were tabulated. Result: The mean value for the distance between mastoid process and Foramen ovale is about 7.01 cms. The mean for the distance between mastoid process and jugular Foramen is quite less about 3.45 cm.The mean for the distance between mastoid process and carotid canal is about 4.76cm. Conclusion: Working knowledge of the normal and variant anatomy of the skull base is essential for effective surgical treatment of disease in this area. INTRODUCTIONAt the base of the skull the foramen ovale is one of the larger of the several opening that transmit nerves through the skull. The foramen ovale is situated in the posterior part of the sphenoid bone, posterolateral to the foramen rotundum. The foramen ovale is a foramen in the greater wing of the sphenoid bone. The foramen ovale is one of two cranial foramina in the greater wing, the other being the foramen spinosum [1]. The foramen ovale is posterolateral to the foramen rotundum and anteromedial to the foramen spinosum. Posterior and medial to the foramen is the opening for the carotid canal [2]. The foramen ovale is used as the entry point into the skull when conducting a Percutaneous Stereotactic Rhizotomy, a type of radiofrequency ablation performed to treat trigeminal neuralgia. Jugular foramen of human skull is one of the most interesting foramina [3]. It is a complex bony canal, numerous vital structures, including nerves and vessels are transmitted through it. Most of the intracranial and extra cranial lesions of posterior cranial fossa might affect the structures in jugular foramen in addition to intrinsic abnormalities [4].Hence, the present study was done to examine the anatomy of jugular foramen, including its morphological features and dimensions [6]. The jugular foramen is a large foramen (aperture) in the base of the skull [6]. It is located behind the carotid canal and is formed in front by the petrous portion of the temporal bone, and behind by the occipital bone; it is generally larger on the right than on the left side.Cranial nerves IX, X, and XI and the internal jugular vein pass through the jugular foramen [7]. The carotid canal is the passageway in the temporal bone through which ...