Background: Increase in childhood overweight and obesity have become a major public health problem in industrialized nation (1). It is also increasing in developing countries (2). Bangladesh is a developing country. School going children of this country is suffering from malnutrition rather than obesity. The national nutrition survey (1995-96) report shows that about 62% of the children aged 6-9 years are malnourished (3). The nutritional status, physical activity and food habit of school going children of Bangladesh is not known. Objectives: To know the nutritional status, physical activity and food habit of children of a selected government-run primary school at a peripheral district town of Bangladesh. Method: We conducted this cross-sectional descriptive study in the Department of Physiology, Noakhali Medical College, Bangladesh during the period of April, 2012 -June, 2012. Two hundred and twenty students of a selected government-run primary school of a district town of Bangladesh were enrolled for the study by using convenient sampling. Data on diet, physical activity, height (cm) and weight (kg) were collected using a structured questionnaire. Permission was taken from concerned authorities consent from participants. BMI <5, 5-85, >85, and >95 percentile were considered under-weight, normal, overweight, and obese respectively. Data were analyzed by using SPSS (version 12) for windows and web-based “Excel BMI calculator”. Result: There were 41.4 percent boys. The mean age was 9.3±1.6 years. The main diet was rice or bread made of wheat-flour (85.5%) in breakfast, rice with meat, fish, egg, or vegetables for lunch (95.45%) and same menu for dinner (98.64%). Forty-six percent students drank cow’s milk and 22.7% soft drinks. Ninety-nine percent students participated in games for a mean period of 2.81±1.25 hours. The mean±SD period of playing outdoor-game, indoor-game and game-at-school was 1.35±0.58, 1.04±0.45, and 0.76±0.31 hours respectively. Eighty-three percent students did household work for a mean period of 1.03±0.65 hours. The mean±SD height, weight and BMI of the students were 126.6±9.9 cm, 22.01±5.07 kg and 13.56±1.60 respectively. Conclusion: Sixty-five percent students were underweight, 34.55% normal weight and 0.45% obese. The prevalence of under-weight was alarmingly high and that of overweight and obesity was extremely low among the students of a government-run primary school in a peripheral district town of Bangladesh. Ninety-nine percent students participated in physical activity. The menu of diet contained all kinds of food but the quantity of food was not measured.