Juvenile granulosa cell tumor (JGCT) of the ovary, a rare pediatric cancer, carries a very poor prognosis in advanced and recurrent cases. A 10-year-old girl with stage IA JGCT, initially treated with resection only, presented with extensive unresectable multifocal pelvic recurrence. She underwent surgery, chemotherapy (cisplatin/paclitaxel alternating with cisplatin/cyclophosphamide/etoposide/bleomycin), myeloablative chemotherapy (carboplatin/etoposide/melphalan) with autologous bone marrow transplant, and pelvic radiation. She tolerated therapy well and is in complete remission 69 months after her recurrence.