Hand washing behavior can protect students from infectious diseases. In practice the rates of proper hand washing behavior around the world are still very low. The objective of this study was to identify perceived benefits of hand washing and perceived barriers of hand washing among fifth grade students of public elementary schools. Pender’s Health Promotion Model was used to guide the study. A cross-sectional study was conducted. Samples were 404 fifth grade students recruited from 6 public elementary schools in North Denpasar sub-district, Bali, Indonesia. Data was collected by using Hand Washing Behavior Questionnaire. Descriptive data analisis was used to analyze frequency, percentage, mean and standart deviation among the interest variables. Main results found that perceived benefits of hand washing was high (M= ,59, SD= ,22) and perceived self efficacy of hand washing was low (M= ,09, SD= ,11). Based on the results, health promotion of proper hand washing behavior and better facilities of hand washing should also be applied to improve hand washing behavior among students.