Purpose: This study was performed to test an obesity management program for elementary school children. The program was assessed by examining its effects on the obesity, dietary attitudes, dietary habits, and exercise habits. Methods: The participants were 65 elementary school children, of which 32 were assigned for the experimental group and 33 for the control group. The experimental group received an 8 weeks obesity management program. The outcome variables were measured before and after the program. $X^2$-test and t-test were used to analyze the data. Results: After the obesity management program, the BMI and fat mass percentage in the experimental group were significantly reduced. The score for dietary attitudes and dietary habits changed in a positive direction. Conclusions: The findings from this study suggest that the obesity management program was effective in decreasing the rate of obesity and increasing the score for dietary attitudes and dietary habits. The program should be effective in the management of obesity in elementary school children.