The purposes of this study were to segment adolescents into groups by family and school factors and to investigate the differences among the groups regarding body image and self-esteem. The study distributed the questionnaires to the adolescents who were middle and high school students in South Korea. The total respondents were 2240. The data were analyzed by factor analysis, cluster analysis, ANOVA, Duncan test, and $X^2-test$. Factor analysis showed that body image had four dimensions: appearance management, physical attractiveness, weight control, and the opposite sex fear. The cluster analysis showed that Korean adolescents were segmented into four groups (family preference/school preference group, family dissatisfaction/school dissatisfaction group, family average/peer competition group, family average/peer dissatisfaction group). The four groups were significantly different in regard to three dimensions of body image, self-esteem, and demographics. For example, the family preference/school preference group was most satisfied with their bodies, had a lowest opposite sex fear, and had a highest self·esteem. However, family dissatisfaction/teacher dissatisfaction group was most dissatisfied with their bodies, had a greatest interest in their appearance, and had a lowest self-esteem.