Background) Acute kidney injury (AKI) is well known complication of diabetic ketoacidosis (DKA). However, only a few studies have focused on AKI caused by DKA in children with Type I diabetes mellitus (TIDM). This study aimed to assess incidence and clinical characteristics of AKI in children with DKA.br＞ Subjects and methods) We retrospectively reviewed the records of children admitted with DKA in Chonnam National University Hospital between January 2004 and April 2017. Age of the patients was 1 year to 18 years. Enrolled patients were divided into two groups with and without AKI on admission according to the Kidney Disease: Improving Global Outcomes (KDIGO) criteria. Clinical characteristics, laboratory data and medical records were compared between the two groups.br＞ Results) 83 patients were included in this study. According to the KDIGO criteria, 39 patients (47%) had AKI on admission. In our study, 71.8% of patients with AKI had stage 1, 20.5% had stage 2,7.7% had stage 3, and there were no case of AKI requiring renal replacement therapy. At 12 and 24 hours, the percentage of AKI decreased to 15.8% and 8.2%, respectively. Patient with AKI on admission had high white blood cell (WBC) count, neutrophil percent, platelet count and mean platelet volume (MPV) at initial blood sampling ( P 0.01, P = 0.01, P = 0.03 and P = 0.01, respectively). Corrected sodium (Na) and calculated serum osmolality were also higher in AKI group ( P = 0.01 and P 0.01, respectively). The patient with AKI had more severe stage of DKA on admission ( P = 0.01). In the binomial logistic regression analysis model, initial corrected sodium level of 145 mEq/L or greater was associated with a 6-fold increase in the odds of AKI (odd ratio 6.352; 95% CI, 1.076-37.504;P = 0.04). Severe DKA (pH 7.1, HCO3- 5 or corrected Na ＞150 mEq/L) was associated with a 3-fold increase in the odds of AKI (odd ratio 3.858;95% CI, 1.072-13.876;P = 0.04). There was no statistically significant difference between 3 stages of AKI severity.br＞ Conclusions) In our study, the incidence of AKI with DKA was 46.2%. WBC count, neutrophil percent, platelet count, MPV were significant difference between AKI and non-AKI group. Level of corrected Na and severity of DKA are associated with the development of AKI. It can be possible tools in the recognition and management of AKI patients with DKA.