Abstract: The frontal sinuses are a part of paranasal sinuses and they are located in the frontal bone above each orbits. The structure of frontal sinus can be variable from person to person and its sizes might be different in different populations. 50 macerated skulls(Males=28, Females=22) of age group 40-60 yrs are cleaned and subjected to 3D axial multislider CT scan. Axial and coronal images of slice thickness of 4mm were obtained. Frontal sinus ( symmetry and lobulations) were observed and classified. Frontal sinus symmetry was observed in 34 (68%) individuals, asymmetry in 15 (30%) individuals and frontal sinus was absent in 1(2%). The features of frontal sinus morphology make it most convenient part of the skeleton for forensic identification. Variations seen in the anatomy of frontal sinus will help otolaryngologists during surgical procedures involving frontal sinus and skull base.