Sparganosis is a zoonotic larval cestode infection, rarely found in India. Sparganosis of the breast is a quite rare parasitic infection of humans and presents as soft tissue masses that mimic breast malignancy or benign tumor. We present here a case of histologically confirmed breast sparganosis. Ultrasonography of breast showed a well-defined, hypo-echoic mass lesion above pectoral muscles, lying deep to breast tissue. MRI revealed a well-defined lesion in plane between pectoral muscle and breast. Histopathology of excised lump showed presence of larval form of spirometra.