The management of diabetes mellitus remains an enigma even though its symptoms were described more than 2000 years ago [9]. This is because the central therapeutic goal of diabetes management, euglycemia, is influenced by complex physiologic and pathologic processes, some of which are clearly understood, while others are less clear. Suboptimal glycemic control is a recognized risk factor for acute and chronic complications of diabetes including microvascular and macrovascular diseases. Various Oral Hypoglycemic Agents (OHA) have been widely used for the same. However, there is recent evidence in humans and animal models suggesting that vitamin D may play an important role in modifying the risk of diabetes [10]. This study aims at establishing the role of Vitamin D in Type 2 Diabetes Mellitus. Hope this study resolves the disputed role of Vitamin D and would be a useful tool in managing Type 2 Diabetes Mellitus in the future.