This study identified the dietary lifestyles of Korean adolescents and analyzed how these lifestyles affect their satisfaction with school meals. Data from the 2024 Consumer Behavior Survey for Food conducted by the Korea Rural Economic Institute were used, and 588 adolescents aged 13 to 18 years were included in the final analysis. Factor analysis identified three dietary lifestyle factors–“plan/safety-oriented,” “taste-oriented,” and “convenienceoriented”– and one factor representing school meal satisfaction. Multiple regression analysis showed that the “plan/safety-oriented” and “taste-oriented” lifestyles significantly influenced school meal satisfaction. In particular, the “plan/safety-oriented” lifestyle, characterized by an emphasis on food safety, nutrition, and meal planning, had the greatest impact on school meal satisfaction. The “taste-oriented” lifestyle, characterized by an openness to new foods, a preference for taste, and regular eating habits, also positively affected school meal satisfaction. By contrast, the “convenience-oriented” lifestyle did not significantly influence school meal satisfaction. These findings provide a basis for developing future policy measures, such as food waste reduction strategies or customized school meal models, and offer insights for designing dietary education programs tailored to the characteristics of adolescents.