Background- Accessory renal arteries are very common variant in humans, it may be or not bilateral, vestigial structure that develops during the ascent of the kidney from the pelvis to the lumbar region. The purpose of this study to evaluate and compare the frequency, Length, Diameter of Accessory renal artery in male and females of Western U.P. Population. Method and Material- The data was collected by using CT Scan machine G.E 64 slice with software Syngo angiography of 100 patients was collected. CT angiography scan was made and thin slices (0.6 mm) axial images were obtained. The frequency of accessory renal arteries, Length and Diameter can be evaluated & compared in male and females subjects. A correlation is considered significant when p < 0.05. For comparing continuous variables, the t-test was applied. All the statistical analysis was done by SPSS software