Background: a higher concentration of the active vitamin D metabolite colic calciferol 1,25-dihydroxyvitamin D3 is associated with increased urinary calcium excretion, which could lead to increase the risk of stone formation. Objectives: To assess vitamin D level in patients with recurrent renal calcium (Ca) stones. Patients and methods: This study was conducted in Urology Department at Menoufia University Hospital during the period from March 2018 to December 2019. 96 patients were included in this study divided into two groups. The first group (group 1) consisted of 76 patients with renal Ca stone and the second group (group 2) consisted of 20 cases without renal stone. Patients who were included in this study seeking for treatment of recurrent renal stone that proved to be Ca stone by CT KUB or stone analysis. Results: there was no statistically significant difference between the two groups regarding vitamin D level, there was no statistically significant difference between different types of calcium stone in relation to vitamin D levels (P= 0.981). There was no statistically significant correlation between vitamin D levels with age (P=0.300), Hounsfield unites of stone (P=0.650) or serum creatinine (P=0.690). Conclusion: There was no statistically significant difference between studied groups regarding vitamin D level. Further studies are needed to determine whether there is any untoward consequence of a concomitant rise in intestinal absorption and urinary excretion of calcium associated with vit D supplementation in idiopathic stone formers.