One of the most common causes of mortality in patients with Diabetes Mellitus (DM) is cardiovascular disease. Electrocardiography (ECG) is considered as a screening technique for cardiovascular disease, particularly in individuals who have hypertension or are suspected of having cardiovascular disease. This study aims to analyze the factors associated with ECG abnormalities in Type 2 Diabetes Mellitus patients. This study is an analytic observational with a crosssectional study design. Patients with type 2 diabetes who were 40 to 70 years old were enrolled using a non-probability selection method. Approximately 60% of 104 patients have an abnormal ECG. Abnormal ECG found in this study are structural heart abnormalities such as left ventricular hypertrophy and left atrial hypertrophy, left and right axis deviation, impulse conduction abnormalities like right and left bundle branch block, an ischemic pattern such as old myocardial infarction, ST-segment depression, T wave inversion and electrical abnormality as atrial fibrillation. Chi-square analysis followed by logistic regression analysis found hypertension (p = 0.001), DM duration over 10 years (p = 0.239), age over 60 (p = 0.001), glucose levels over 200 mg/dl (p = 0.500), smoking (p = 0.08). Factors associated with ECG abnormalities in type 2 DM patients are hypertension and age over 60..