Breaking bad news in pediatric oncology—from the initial cancer diagnosis to relapse, treatment failure, unfavorable prognosis, and transition to palliative care—is one of the most challenging communication tasks in medicine. It is not merely the delivery of medical information but a multidimensional interaction involving the child, parents, and healthcare team, with potential effects on family trust, shared decision-making, treatment acceptance, and psychological adjustment. In Iran, parents of children with cancer have emphasized the importance of compassionate communication, privacy, adequate information, and psychological and spiritual support. However, communication training in medical and specialty education is often fragmented, brief, and dependent on informal role modeling. Therefore, empathy and breaking bad news skills should be incorporated into undergraduate medical education, pediatric residency, and pediatric hematology-oncology fellowship through a longitudinal, developmental, interprofessional, and competency-based curriculum. Such training should include simulation, role-play, standardized patients, direct observation, structured feedback, and reflective practice, while being adapted to the Iranian language, culture, family structure, and ethical context.