Objective of the study was to assess the prevalence of vitamin D deficiency among geriatric patients of a tertiary care hospital of a metropolitan city of India. Calculated sample size for this cross sectional study was 129 and we have taken 160 sample. Geriatric patients who were not on vitamin D and calcium supplements for last 6 months were included for the study. Out of 160 participants, only 8 (5%) participants had normal vitamin D levels and 152 (95%) study participants had low vitamin D levels among them 107 (66.88%) participants had vitamin D deficiency, 45 (28.13%) participants had vitamin D insufficiency.