A parasitological survey was carried out on the livers of 250 sheep of different ages and sex slaughtered in Assiut slaughter houses for studying the prevalence of different hepatic parasites. The overall prevalence rate of infection with hepatic parasitic infection was 29.6%. The detected parasites were: Fasciola spp. 19.6% (F.gigantica 14%, F.hepatica 9.2%), Cysticercus tenuicollis 4.8% and hydatid cysts 2.4%. Diagnosis of fascioliasis was carried out through faecal, gall bladder examination in addition to comparison of these methods with P.M. examination for detection of adult worms in the liver. Diagnosis of fascioliasis by detection of eggs in the gall bladder was the best method of diagnosis (21.2%) followed by detection of worms in the liver (19.6%) and by detection of eggs in the faeces (11.6%). The prevalence rate of fertile, sterile and calcified hydatid cysts was 33.3%, 13.3% and 53.3% respectively. The present study showed that the prevalence rate of different parasites encountered in the liver was comparatively higher in females than in males. On the other hand it was higher in aged animals than in young ones.