Left ventricular diastolic dysfunction (DD) may signal the onset of diabetic cardiomyopathy, which has been considered as a separate cardiovascular illness. Heart failure (HF) frequency in diabetics is significant despite the lack of hypertension & also coronary artery disease. So, this investigation aims to evaluate left ventricular DD in normotensive asymptomatic type 2 diabetes mellitus (T2DM) patients & also determine whether there is any association between DD & T2DM. This is a cross –sectional study in which 133 patients with T2DM who are normotensive & asymptomatic were chosen using the simple random sampling method. Samples were collected from combined hospital Government Medical College of Karwar & the Karwar Institute of Medical Sciences Karnataka, India. Patients were separated into two groups for the trial. Group 1 includes people with DM & normal echo (N); group 2 includes those with DM & left ventricular dysfunction (Lv). To evaluate the diastolic function (func.) of the left ventricle, echocardiography was used. Findings indicate that DD affected 39.8% of T2DM patients, & that diabetes was linked to advancing age, higher FBS, PPBS in patients with Lv dysfunction, longer duration of diabetes, & the presence of multiple E/A waves. But because the ratio for E/A was high in individuals with normal echo DM, it was discovered that diabetes without Lv dysfunction was more substantially displayed in these patients. Future studies should therefore investigate the possibility that early identification & proactive management of DM patients having pre-clinical DD could delay the onset of HF.