Objective: Empirical research has always treated adolescents' eating habits from a variable-centered perspective, but this approach may miss the configurations of eating behaviours that uniquely describe discrete groups of individuals. The aim of this study was to investigate prototypical patterns of eating habits in a large sample of Italian adolescents and their behavioural and psychological correlates., Method: Data were gathered from 1388 students (F=60%, mean age 14.90±1.34 yrs), who were asked to fill in an original questionnaire surveying dietary habits, body weight attitudes, body image, sport activities and sources of information about food. Perfectionism, self-esteem, self-efficacy and care for food were also assessed as well-known psychological risk factors for Eating Disorders., Results: Five prototypical eating behaviour patterns were identified through cluster analysis. Cluster membership was associated (p<0.05) with gender, age and age- and gender-correct BMI percentile, perceived relevance of physical appearance in achieving success in life; one's weight and body image evaluation, dieting, physical activity, self-efficacy, self-esteem and care for food. Clusters did not differ in perfectionism score and in frequency of consulting different sources of information about food and weight, except in the case of dieticians., Conclusion: The identification of prototypical eating habits patterns revealed a large range of wrong eating attitudes and behaviours among Italian adolescents. Such data suggest the need to develop and implement adequate prevention programs.