History of radiotherapy of Hodgkin\'s disease (now Hodgkin lymphoma).- Background and rationale for radiotherapy in early stage Hodgkin lymphoma (HL).- Background and rationale for radiotherapy in advanced stage HL.- Salvage therapy for relapsed and refractory HL.- Principles of chemotherapy in HL.- Management of lymphocyte predominant HL.- Pediatric HL, the rationale for radiation therapy.- The role of imaging in radiotherapy for HL.- Target definitions for HL - the involved node radiation field concept.- Traditional and modern techniques for radiation treatment planning.- Quality assurance of radiotherapy for HL.- Evaluation of response after radiotherapy for HL.- HL in special populations and rare localizations.- Acute and long-term complications of radiotherapy for HL.- Proton therapy for HL.- Future prospects for radiotherapy for HL.