Background: Asymptomatic bacteriuria is defined as the presence of significant bacteriuria>105 colony forming units (cfu)/mL without the symptoms of an acute urinary tract infection. Pre-eclampsia is defined by blood pressure of greater than 140/90 mmHg after the 20th week of pregnancy and proteinuria of equal to or higher than 300 mg per 24 hours.Objective: Detecting the incidence of asymptomatic bacteriuria among study group at El shatby antenatal care clinic and investigate the association between development of PE and presence of ASB.Subjective: The study included 80 pregnant women. Quantitative culture remains the gold standard for diagnosis of urinary tract infection in pregnancy,Microscopic examination of a wet film of uncentrifuged urine was carried out to detect the presence of pyuria, which is considered when pus cells are >5 pus cells / HPF. Amount of urine (1 μl) is inoculated on MacConkey agar,blood agar and sabouraud dextrose agar plates. The plates are incubated for 24-48 hours at 37°C. After incubation, the colony count of a pure single organism is performed a significant bacteriuria is considered when the colony count is >105 (cfu/ml(Results: The net result of our study showed that the patients were screened for asymptomatic bacteriuria and the incidence was 30%. Asymptomatic bacteruria was more common in preeclamptic group (37%) than control group (22%) but with no significant difference.Conclusion: Asymptomatic bacteriuria was a common finding among pregnant women in our study ( 30% of whole cases).