Primary hydatid disease of spleen is rare. We report here is a case of 40 year old male presenting with pain in the left hypochondrium at JARASH Hospital on 4/9/2014. The patient gave history of long standing splenic cyst. Then CT Scan was done & revealed cystic swelling within the spleen suggestive of hydatid Cyst. So splenectomy was done and spleen was sent for histopathological examination which confirmed the diagnosis.