Background: The prevalence of hospital malnutrition in children ranges between 15% and 30%. Although the consequences of hospital malnutrition are enormous, it is often unrecognized and not treated. The aim of this study was to identify the current status of in-hospital nutrition support for children in Korea by carrying out a nationwide survey. Methods: Out of 344 general and tertiary hospitals in South Korea, a total 53 institutes having pediatric gastroenterologist and more than 10 pediatric inpatients were selected. The questionnaire was developed by the nutrition committee of Korean Society of Pediatric Gastroenterology, Hepatology and Nutrition. The questionnaires were sent to pediatric gastroenterologists in each hospital. Survey was performed by e-mails, and some incomplete answers were asked on telephone. Results: Forty hospitals (75.5%) responded to the survey; 23 of them were tertiary hospitals, and 17 of them were general hospitals. Only in 21 hospitals (52.5%), all required personnel including pediatrician, nutritionist, pharmacist, and nurse were assigned to nutrition support of hospitalized pediatric patients. Routine nutritional screening was performed only in 21 (52.5%) hospitals at admission, which was lower than those in adult patients (62.5%). Nutrition screening tools varied among hospitals, and 33 of 40 (82.5%) hospitals were using their own screening tools. The most frequently used nutritional assessment parameters were weight, height, hemoglobin, and serum albumin levels. In our nationwide survey, the most frequently reported main barriers of nutritional support in hospital were the lack of manpower and excessive work load; and the second barrier was insufficient knowledge and experiences. Conclusions: Although this nationwide multicenter survey was performed targeting at general and tertiary hospitals with pediatric gastroenterologists, manpower and medical resources for nutritional support were still insufficient for hospitalized children and standardized nutritional screening stools were not still routinely used in Korea. For appropriate nutritional management of hospitalized pediatric patients, more attention to the hospital malnutrition and additional national policies for nutritional support in hospital are needed.