Background. The criteria for response evaluation in pediatric and adolescent Hodgkin lymphoma (HL) are controversial. We compared different criteria for the interpretation of interim and post-treatment PET/CT to predict the outcome of pediatric and adolescent HL. Procedure. Baseline, interim, and post-treatment 18F-FDG-PET/CT scans of 147 pediatric and adolescent HL patients were interpreted according to the International Harmonization Project Criteria (IHPC) and Deauville Criteria (DC). Two thresholds of positivity were used for the DC: DC-3, scores of 3-5; and DC-4, scores of 4-5. Diagnostic performance of interim and post-treatment PET in outcome prediction was evaluated. Progression-free survival (PFS) was analyzed by the Kaplan-Meier method and Cox proportional hazards model. Results. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy of interim FDG-PET/CT were 82%,