Liver disease is a rare complication of pregnancy which can be serious for both the mother and the infant. In particular, HELLP syndrome (hemolysis, elevated liver enzymes and a low platelet count) is a life threatening complication of severe preeclampsia. Pregnancies complicated by the HELLP syndrome are usually associated with increased maternal and perinatal morbidity and mortality including disseminated intravascular coagulopathy, pulmonary and cerebral oedema, acute renal failure, rupture of the liver hematoma and a variety of hemorrhagic complications. The HELLP syndrome occurs in 4 to 12% of patients with severe preeclampsia and prompt delivery is the only treatment. We report two cases of HELLP syndrome which developed in women during delivery and without any predictive factors during pregnancy.