Background <p>Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder known for its microvascular and neuropathic complications. Emerging evidence suggests that prolonged hyperglycemia may also adversely affect auditory function. The present study was undertaken to determine the prevalence of sensorineural hearing loss (SNHL) among patients with T2DM and to examine its association with duration of disease and glycemic control.</p> Aims and Objectives <p>1. To detect hearing loss among patients with Type 2 Diabetes Mellitus based on age, duration of diabetes, and glycemic control. 2. To assess the correlation between hearing loss and duration of disease.</p> Methods <p>This hospital-based cross-sectional study included 100 patients with T2DM aged 35–70 years. Clinical details including duration of diabetes and glycated haemoglobin (HbA1c) levels were recorded. All participants underwent otoscopic examination followed by pure tone audiometry. Associations between hearing impairment and clinical variables were analyzed using Chi-square test. A p value &lt;0.05 was considered statistically significant.</p> Results <p>Hearing impairment was identified in 70% of participants, predominantly sensorineural in type (65%). Patients with diabetes duration &gt;15 years demonstrated significantly higher frequency of hearing impairment compared to those with shorter duration (χ² = 6.84, p = 0.03). Similarly, individuals with HbA1c &gt;8% showed significantly increased prevalence of auditory dysfunction (χ² = 5.12, p = 0.02). High-frequency hearing thresholds were most commonly affected.</p> Conclusions <p>Sensorineural hearing loss appears to be a frequent but under-recognized complication of T2DM. Longer duration of disease and poor glycemic control are significantly associated with increased prevalence of auditory dysfunction. Periodic audiological evaluation may be considered in long-standing diabetic patients.</p>