Adult Granulosa-Cell Tumor (GCT) is an uncommon ovarian malignancy. The clinical course is characterized by slow growth with late recurrence. A variety of clinical and pathologic parameters have previously been evaluated for prognosis with inconclusive results. The aim of this study was to report a case of a granulosa-cell tumor of the ovary that recurred 25 years after first surgery. The clinical course and histopathology of the case were reviewed and a literature search for other reported cases was performed.