Introduction: The anterior ethmoidal artery (AEA) is an anatomical landmark; its position is important for recognizing structures of difficult access (frontal sinus) and to define skull base in surgery. The anterior ethmoidal artery crosses three cavities: the orbit, the ethmoid labyrinth and the anterior fossa of the skull. The aims and objectives of the study are to determine the course of the AEA and the distance of the AEA from the base skull. Material and Methods: A surveying radiological study was carried out on 100 coronal CT images from subjects who were exposed to paranasal CT imaging during a period April-July 2018 in a tertiary hospital. All CT images, along with indication of sinusitis were encompassed in the examination. The elimination being changed skull base anatomy due to earlier surgical interference, injury or tumour and age <18 years. Result: Among the coronal CT images analyzed, the male and female were noted to be 60 and 20 respectively. Out of 160 sides, AEA was identified in all the images studied (100%). The AEA was found below SB in 134 out of 160 (83.8%). On measuring the distance between the AEA and SB majority belonged to Group A (74 out of 134) in comparison to Group B (40 out of 134) and Group C (20 out of 134). The mean distance was found to be 1.43 mm, 3.8 mm, 5.72 mm in Group A, Group B and Group C respectively. The overall mean distance between the AEA and the SB was 3.65 mm. Discussion: The AEA is an anato-radiologic keystone for paranasal sinus and anterior skull base endoscopic operations. The presence of AEA in all of the pictures examined in this investigation is consistent with the reported range of 92-100 percent. In the ethmoidal air sinus, AEA was found to have a varied path. Conclusion: Due to differences in the length of the lateral lamella of the cribriform fossa, the distance between AEA and SB differs. The structure of the olfactory fossa varies. Despite the statistical limitations, the positional association between AEA and the depth of the olfactory fossa is noteworthy.