Background: Diabetes is the commonest endocrine disease affecting mankind. The present study was conducted to assess ECG abnormalities and treadmill test findings in patients with type 2 diabetes mellitus. Materials & Methods: 80 diabetic and 50 non-diabetic subjects of both genders were enrolled. All the subjects underwent fasting and postprandial blood sugar, glycosylated haemoglobin (HbA1c), lipid profile (fasting and post-prandial), electrocardiography (ECG), and treadmill test (TMT) monitoring.