BACKGROUND AND OBJECTIVES: The rate of Caesarean delivery has been increasing steadily over the past two decades and is the most common obstetric operative procedure worldwide. Previous caesarean section has been found to be the most common indication due to the inability to precisely confirm the integrity of the scarred lower uterine segment (LUS). The purpose of this study is to evaluate the accuracy of ultrasonography (USG) in determining the LUS thickness in previous caesarean section patient.