OBJECTIVE -To investigate the association between dietary adherence and glycemic control among youth with type 1 diabetes.RESEARCH DESIGN AND METHODS -We conducted a cross-sectional analysis of 119 youth aged 9 -14 years (mean Ϯ SD 12.1 Ϯ 1.6 years) with diabetes duration Ն1 year (5.4 Ϯ 3.1 years). Dietary adherence was assessed using the Diabetes Self-Management Profile diet domain. Higher score defined greater dietary adherence. Glycemic control was determined by A1C.RESULTS -Dietary adherence score was inversely correlated with A1C (r ϭ Ϫ0.36, P Ͻ 0.0001). In a multivariate model (R 2 ϭ 0.34, P Ͻ 0.0001), dietary adherence (P ϭ 0.004), pump use (P ϭ 0.03), and caregiver education (P ϭ 0.01) were associated with A1C. A1C of youth in the lowest (9.0%) tertile of diet score was higher than A1C of youth in the middle (8.1%, P ϭ 0.004) and upper (8.4%, P ϭ 0.06) tertiles. Dietary adherence uniquely explained 8% of the variance in A1C in the model. CONCLUSIONS -Greater dietary adherence was associated with lower A1C among youth with type 1 diabetes.