We collected survey data to identify the impact of several explanatory variables on children, adult, and household food security in East Chitwan, Nepal. The polychoric correlation coefficient indicated a high correlation among children, adult, and household food securities. When ordered probit regression model was estimated to identify the magnitude and direction of these pertinent variables, we found that a higher education level, higher proportion of agricultural income and adoption of hybrid rice/maize have a positive effect on food security while age of household head and number of conservation technologies adopted have a negative impact on food security. Results also indicated that remittance-receiving households were more likely to be food secure in the study area.