This study was conducted to examine the effects of an 8-week weight loss program, on body composition, body shape satisfaction, body shape esteem in 15 obese children. This program included nutritional education and regular physical fitness. After completion of this program, height and body weight increased slightly but body compositions changed. BMI, degree of obesity, and body fat levels dropped slightly, however these differences were not significant. After the 8-week program body weight increased from $63.61{pm}8.80;kg$ to $64.07{pm}9.11;kg$, degree of obesity and BMI decreased from $151.73{pm}13.62%$, and $29.08{pm}2.35$ to $146.60{pm}12.92%$, and $28.57{pm}2.26$, respectively, and the percentage of body fat decreased slightly from $42.70{pm}4.87%$ to $41.46{pm}4.88%$. There were slight changes in weight of body muscle and lean body mass from $19.62{pm}3.48;kg$ and $36.17{pm}5.78;kg$ to $20.30{pm}3.64;kg$ and $37.16{pm}6.18;kg$, respectively. LBM and amount of muscle were higher after this weight loss program. The body shape esteem score increased from $7.60{pm}4.01$ to $9.00{pm}6.20$. There was no significant difference in body shape satisfaction before and after the program, and the participants also wanted to be leaner. Finally, body weight, BMI, and body fat showed negative correlations to body shape esteem.