Patients with Type 2 Diabetes Mellitus (T2DM) facing Non-ST-Segment Elevation Myocardial Infarction (NSTEMI) often exhibit a higher incidence of thrombotic events. Hemoglobin A1c (HbA1c) levels, indicative of glycemic control, might influence the thrombus burden in such cases. This study aimed to evaluate the relationship between HbA1c, and coronary thrombus burden expressed as Thrombolysis in Myocardial Infarction (TIMI) thrombus grade, in NSTEMI patients. Methods: This cross-sectional comparative study was carried out on NSTEMI patients with T2DM who underwent early percutaneous coronary angiography. Patients were categorized into two groups based on HbA1c levels: Group I (optimal glycemic control, HbA1c ≤ 6.5%) and Group II (suboptimal glycemic control, HbA1c > 6.5%). Detailed clinical, laboratory, and angiographic assessments were performed. The primary outcome measure was the TIMI thrombus grade. Results: Group II showed significantly higher weight compared to Group I (P=0.026). Group II exhibited higher fasting blood glucose (FBG) and Homeostatic Model Assessment of Insulin Resistance (HOMA-IR) levels (P