This study on adolescents was intended to assess the prevalence of disordered eating attitudes and the nutritional status of adolescent girls in Saudi Arabia. Disordered eating attitudes and behaviour were assessed using the EAT-26. The type of eating disorder (ED) was determined using Diagnostic statistical manual of mental disorders, fifth edition. The nutritional status of the adolescent girls was determined by measuring their weight and height twice using standard protocols. The BMI-for-age and height-for-age were defined using WHO growth charts. Comparisons between adolescent girls with and without EDs were conducted using SPSS version 26. Eating disorders (EDs) were prevalent among 10⋅2 % of these girls. Other specified feeding or EDs were the most prevalent ED (7⋅6 %), followed by unspecified feeding or eating disorder (2⋅4 %). Anorexia nervosa was common among 0⋅3 % of the girls. The eating disordered adolescents were either overweight (7⋅7 %), obese (10⋅3 %), stunted (7⋅7 %) or severely stunted (2⋅6 %). ANOVA revealed that the BMI-for-age was influenced by age (P = 0⋅028), the type of ED (P = 0⋅019) and the EAT-26 (P < 0⋅0001). Pearson's correlation showed that the EAT-26 score increased significantly with the BMI (r 0⋅22, P = 0⋅0001), height (r 0⋅12, P = 0⋅019) and weight (r 0⋅22, P = 0⋅0001). The early detection of EDs among adolescents is highly recommended to reduce the risk associated with future impaired health status. Nutrition professionals must target adolescents, teachers and parents and provide nutritional education about the early signs and symptoms of ED and the benefits of following a healthy dietary pattern.