Castleman disease, also called angiofollicular lymph node hyperplasia, is a rare lymphoproliferative disorder characterized by enlarged hyperplastic lymph nodes. Affected patients usually present with mediastinal lymphadenopathy; sometimes other groups of lymph nodes are involved, with or without associated systemic manifestations. We report a case of Castleman disease involving the intraparotid lymph node in a 15-year-old boy who presented with a 3-month history of a painless swelling of the right parotid gland. Fine-needle aspiration cytology of the mass revealed only reactive hyperplasia. The diagnosis of Castleman disease was established on histopathologic examination of the resected mass. We discuss the clinical course, histopathologic features, radiologic characteristics, and management of Castleman disease of the parotid gland in a pediatric patient.