Hodgkin lymphoma (HL), an uncommon but significant subtype of lymphoma, is divided into classical HL (cHL) and nodular lymphocyte predominant HL (NLPHL). Progress has been made in cHL therapy resulting in 5-year failure free survival rates between 61%-89% even in the setting of advanced stage or bulky disease. Patients who relapse however, have a variable prognosis ranging from a 8-year overall survival rate of less than 8% for patients who never achieve a remission to 54% for patients with a complete remission lasting greater than 12 months. High dose chemotherapy with autologous stem cell support is the standard of care for patients with relapsed cHL but for those that relapse despite aggressive salvage therapy 20 - 50%, with median remission durations of approximately 6 months. Furthermore, a subset of relapsed HL patients may not be candidates for aggressive salvage regimens. These novel salvage therapies are needed for relapsed/refractory cHL, especially agents without serious late toxicities are particularly attractive in this disease. Advances in the understanding of HL pathogenesis and lenalidomide's mechanisms of action provide substantial rationale for evaluating lenalidomide in HL patients.