Primary ovarian carcinosarcoma is a rare biphasic tumor. There is variable admixture of both malignant epithelial and stromal component seen in this tumor. We report a case of a primary carcinosarcoma of ovary in a 72‑year‑old post‑menopausal female presenting with the complaint of abdominal distension. Staging laparotomy was done for this patient, and final histopathology was reported as the carcinosarcoma of ovary. The epithelial and sarcomatous components showed immunohistochemical positivity for their respective markers.