Introduction: Hyperglycemia is common and a contributing factor to the undesirable outcomes in kidney transplant recipients. This study investigates the relationship of pretransplant blood glucose levels and the occurrence of delayed graft function among kidney transplant recipients without a diagnosis diabetes mellitus before transplantation.Materials and Methods: Eighty-one patients on long-term hemodialysis with no history of clinically diagnosed diabetes mellitus were enrolled in this study. correlation of the occurrence of delayed graft function with age, gender, donor source, underlying cause of kidney failure, insulin resistance, and blood glucose levels before transplantation was evaluated.Results: There was a significant correlation between abnormal glucose metabolism categories and occurrence of delayed graft function (P=.004). Logistic regression analysis showed that fasting blood glucose before kidney transplantation is an independent predictor of delayed graft function immediately after transplantation (odds ratio=1.042, P=.04).Conclusions: Hyperglycemic patients have an increased risk for delayed graft function and should be treated by more potent immune therapy and further restriction of blood glucose regulation in peritransplantation period.