Background: Preeclampsia is one of hypertensive disorder that affects 4% of pregnant women, the exactcause cannot be identified and it is one of the major causes of both maternal and fetal morbidity and mortality, also it puts a burden on perinatal outcome as prematurity and Intrauterine growth restriction.Continuoussearch for predictive markers of severe PE is important and can be used to target high risk women foreffective preventive treatment. Aim of study: to evaluate Highly Sensitive C-Reactive Protein role usedas predictive factor for severity of preeclampsia and whether it can be used to predict development ofIntrauterine growth restriction. Patients and methods: this is a cross-sectional study includes 80 pregnantwomen with their age 18-35 years , their gestational age range between 32- 40 weeks , admitted to ALZahraa teaching hospital in Najaf, whose diagnosed as PE based on blood pressure measurement andproteinuria. Full history and clinical examination were performed, venous blood aspirated for each womenfor biochemical analysis, Liver functions tests, Renal function tests, Highly Sensitive C- Reactive Protein,and Doppler ultrasound. Results:The patients divided into those with mild PE and severe PE, with orwithout IUGR. No significant difference between the level of Highly Sensitive C-Reactive Protein and theseverity of PE as p value was[0.779], but there is significant difference between the presence of IUGR andthe level of Highly Sensitive C-Reactive Protein when it is? 2mg/L as the p value was[0.020]. Conclusion:We conclude that Highly Sensitive C-Reactive Protein is not significantly associated with the severity ofPreeclampsia but associated with intra uterine growth restriction