Background: Diabetes mellitus (DM) is a rapidly rising chronic illness in developing countries. Glycosylated hemoglobin (HbA1c) is a widely used tool for diagnosing, screening, and managing patients with diabetes, hence proper interpretation of the HbA1c is crucial. Objectives: To investigate the risk factors affecting type 2 diabetes mellitus HbA1c and their correlation with glycosylated hemoglobin (HbA1c). Material & Methods: Diagnosed patients with type 2 diabetes mellitus during study period were enrolled in this study. Criteria for diagnosis were: HbA1c ≥ 6.5% (48 mmol /mol), Fasting plasma glucose ≥ 126 mg/dL (7.0mmol/L) 2-Hour postprandial plasma ≥ 200 mg/dL (11.1 mmol/L). Demographic data and risk factors associated with diabetes were analysed. Results: Majority of the patients (37%) were 51-70 years age group, predominantly male (63%). Among risk factors assessment, 66.5% were overweight or obese, 53.3% had positive family history of DM, 55.3% were hypertensives, 43.5% had dyslipidemia, 32.7% had a family history of CAD, 39.3% were smokers and 32% were physically inactive. HbA1c were significantly associated with the all these risk factors. Conclusion: Age, higher BMI, family history of DM, smoking, physical inactivity, hypertension, dyslipidemia and history of CVD are positively correlated with the HbA1c level.