In our study, we aimed to comparatively evaluate the relative effects of the Mediterranean, DASH, and MIND diets on metabolic parameters in individuals with type 2 diabetes. The study was conducted on 90 individuals diagnosed with T2DM according to the American Diabetes Association diagnostic criteria (fasting blood glucose ≥ 126 mg/dL, 2-hour blood glucose ≥ 200 mg/dL during an oral glucose tolerance test (OGTT), or HbA1c ≥ 6.5% (48 mmol/mol)). Volunteers who participated in the study completed a questionnaire form that included sociodemographic characteristics. In addition, participants' anthropometric measurements (body weight (BW), height, waist circumference (WC), hip circumference (HC), body mass index (BMI)), biochemical parameters (fasting blood glucose, hbA1c (%), LDL-cholesterol, triglycerides, total cholesterol), Visceral Adiposity Index (VAİ), body composition analyses (Fat Mass (FM (%), Fat-Free Mass (FFM) (kg), Basal Metabolic Rate (BMR) (kcal), Visceral Fat Area (VFA) (%)), nutritional status (food consumption frequency, food consumption record, Mediterranean Diet Scale, DASH diet adherence score, and MIND diet adherence score) were evaluated.