Aims: Several nutritional screening tools have been recently developed to predict the risk of malnutrition in hospitalized children, but not validated in Korean hospitalized patients yet. We compared four nutritional screening tools in evaluating nutritional risks in newly hospitalized children. Methods: Medical records of newly admitted pediatric patients between June 2016 and May 2017 at two tertiary hospitals were reviewed retrospectively. Initial information by nurses and hospital records by doctors on baseline clinical, demographic, and anthropometric data at the time of admission were collected in all subjects. Nutritional risks were evaluated using four nutritional screening tools including Pediatric Nutritional Risk Score ( PNRS), Screening Tool for the Assessment of Malnutrition in Pediatrics (STAMP), Pediatric Yorkhill Malnutrition Score ( PYMS), and Screening Tool for Risk of Nutritional Status and Growth (STRONGkids). Each screening tool was compared by Cohen’s kappa coefficient. Results: A total of 559 patients (310 boys and 249 girls, mean age 6.3 ± 5.5 years) were recruited. Patients in medical and surgical departments were 469 (83.9%) and 90 (16.1%), respectively. The prevalence of patients at risk of malnutrition were 31.1% for low risk, 52.2% for medium risk, and 16.6% for high risk by PNRS; 11.4% for low risk, 39.7% for medium risk, and 48.8% for high risk by STAMP; 26.5% for low risk, 25.4% for medium risk, and 48.1% for high risk by PYMS; and 35.6% for low risk, 58.9% for medium risk, and 5.5% for high risk by STRONGkids. PNRS and STAMP showed perfect agreement (kappa = 1.0); PNRS and STRONGkids as well as STAMP and PYMS showed moderate agreement (kappa = 0.566 & kappa = 0.495, respectively). Among 469 patients in medical department, PNRS and STAMP showed low agreement (kappa=0.112), whereas PNRS versus STRONGkids and STAMP versus PYMS still revealed moderate agreement (kappa = 0.562 & kappa = 0.601, respectively). Conclusions: Although PNRS versus STRONGkids and STAMP versus PYMS showed moderate agreement, different nutritional screening tools revealed considerably different results in evaluating nutritional risks in newly hospitalized children. Since pediatric patients are at risk for malnutrition at admission and during hospitalization, screening tools should be selected appropriately according to the situation of each hospital.