Hydatid cysts are known to occur in most organs especially in the endemic areas. The diagnosis of primary hydatid cyst in female genital tract is rare and difficult. A high degree of clinical suspicion should be there for doing pre-operative investigations to exclude hydatid cyst of female pelvis. The patient presented with a lump in lower part of abdomen, which enlarged gradually over last 2 years. A provisional diagnosis of malignant ovarian cyst was made pre-operatively. Total abdominal hysterectomy and bilateral salpingo-oophorectomy was done and whole of the specimen was sent for histopathological examination. On macroscopic examination, one cystic mass was present on the right side of uterus adherent to its anterior wall and second one was in the Douglas' pouch adherent to left adenexa and surrounding structures. The patient responded well to the surgical treatment followed by albendazole administration.