Aims: Central obesity may better reflect metabolic risk than general obesity in adults with type 2 diabetes mellitus (T2DM). This study compared the associations of waist circumference (WC) and body-mass index (BMI) with reduced kidney function.Methods: This retrospective, cross-sectional study included 300 adults with T2DM. Demographic, anthropometric, clinical, and laboratory data were obtained from electronic medical records. Reduced kidney function was defined as an estimated glomerular filtration rate (eGFR)