Introduction: Hydatid disease is an infection caused by the larval form of Echinococous granulosus and is endemic in animal husbandry communities. Hydatid disease of the breast is rare and occurs in less than 1% of the cases. In this paper, we presented a known case of hepatic hydatidosis readmitted due to hydatid cyst of the breast. Case Presentation: A 38-year-old woman, a known case of neglected hepatic hydatidosis since eight years ago, presented to our hospital with new onset of abdominal pain. Computed tomography (CT) scan revealed signs of hydatid cysts in the liver, spleen, and both breasts. Laparotomy with complete resection of the hydatid cysts in the right lobe of the liver was performed along with cholecystectomy due to the closeness of the cysts to the gallbladder and severe adhesions. The patient also underwent splenectomy and cystectomy of the breasts. Histopathologic report of the resected cysts from the breasts, liver, and spleen confirmed the diagnosis of hydatidosis. The patient was discharged with albendazole (10 mg/kg daily for three weeks) and was advised to come back to the clinic for follow-up evaluations. Conclusions: Although breast hydatidosis is rare, it should be considered as a differential diagnosis of breast lumps presenting in endemic areas and among immigrants from endemic areas.