Objectives The study aimed to assess occurrence of eating disorders and its nature, associated risk factors, and comorbidities in a cohort of adolescents with type 1 diabetes (T1D). Methods In this cross-sectional study, 138 patients were recruited to complete three questionnaires for assessment of eating disorder (ED); Eating Attitude Test (EAT-26) and Eat Behavior questionnaire (ORTO-15) and Eating Disorder Examination Questionnaire version 6 (EDE-Q6) to assess diabetes-related medical outcomes. Results Patients were categorized as having an ED according to predetermined cutoff value for each questionnaire. Of the 138 patients, 24 (17.4%) had risk for EDs by EAT-26 score, 53 (38.4%) have got orthorexia nervosa by ORTO-15 and 45 (32.6%) were having a disordered eating behavior by EDE-Q6. Patients with risk of EDs had lower mean ORTO-15 score (p=0.01), and higher mean Global EDE-Q6 (p<0.001). A positive correlation was found between EAT-26 scores and both age (p<0.0001) and body mass index (p<0.0001). ORTO-15 score was correlated with duration of diabetes (p=0.0418). Diabetic ketoacidosis, peripheral neuropathy, and microalbuminuria occurred frequently in patients with ED high score. Hypoglycemic episodes were reported more in those with high EAT-26 or Global EDE-Q6 scores. Conclusions Subclinical EDs and abnormal eating behaviors are common in Egyptian adolescents with T1D.