Backg</span><span style="font-family:Verdana;">round: Obstetric sonography is one of the prenatal tests offered to most pregnant women and an essential tool that helps health care providers to establish fetal condition and growth. The Objective: to assess the knowledge, attitudes, and practice about obstetric sonography among women at KAUH in Jeddah, Saudi Arabia. Method: A cross-sectional study was co</span><span style="font-family:Verdana;">nducted during 2018-2019 among 367 women. It included all women </span></span><span style="font-family:Verdana;">that </span><span style="font-family:""><span style="font-family:Verdana;">attend the OB/GYN outpatient clinic at KAUH in Jeddah. The data was collected through </span><span style="font-family:Verdana;">interview</span></span><span style="font-family:Verdana;">ing</span><span style="font-family:Verdana;"> questionnaire. The questionnaire consisted of 5 items to assess their knowledge, attitude, practice, and sociodemographic characteristics. Data were entered into a Microsoft Excel 2014 sheet, and statistical analysis was performed using IBM SPSS Statistics.</span><span style="font-family:""> </span><span style="font-family:Verdana;">Result: The mean knowledge score about obstetric sonography was 13.9</span><span style="font-family:""> </span><span style="font-family:Verdana;">±</span><span style="font-family:""> </span><span style="font-family:Verdana;">1.7, where 343 (93.0%) had good knowledge, and only 26 (7.0%) had poor knowledge. The result revealed that the third</span><span style="font-family:Verdana;">-</span><span style="font-family:Verdana;">fourth</span><span style="font-family:Verdana;">s</span><span style="font-family:""><span style="font-family:Verdana;"> of the women 291 (78.9%) believed that obstetric sonography is safe, and 309 (83.8%) believed that obstetric sonogr</span><span style="font-family:Verdana;">aphy doesn</span></span><span style="font-family:Verdana;">’</span><span style="font-family:Verdana;">t lead to a congenital anomaly. There