Diabetic people, especially those with diabetes (type 2), have a two- to three-fold greater chance of developing coronary artery disease (CAD) compared to non-diabetics. By assessing the angiograms of diabetic as well as non-diabetic individuals, the current study sought to determine the impact of diabetes mellitus (DM) on the degree and intensity of CAD. This cross-sectional study included 138 male patients out of 1246 patients who underwent coronary angiography for suspected CAD. Type 2 diabetes had been diagnosed in 78 of these patients. fourteen diabetic patients were not found to have CAD. Sixty-four (46.37%) of the diabetic patients and sixty (43.47%) of the non-diabetic patients were found to have CAD and were then examined in the current investigation. Type-2 diabetes demonstrated significantly greater hypertension and age disparities than non-diabetics. Diabetes patients had an increased prevalence of multi-lesion, multivessel, extensive, and relatively small vessel disease than people without diabetes. The left circumflex artery was indeed the coronary artery that was typically frequently affected in diabetes individuals. People who have diabetes (n = 41; 64.7%) had substantially (P = 0.02) greater rates of triple vessel involvement. The structure of the coronary arteries is significantly impacted by diabetes type 2 which is also linked to hypertension, age, and an increased risk of multivessel and severe CAD.