Ongata Rongai is a town situated in the Kajiado North region of Kajiado County, Kenya. It is located within the greater Nairobi Metropolitan Region at an elevation of 1,731 meters above sea level. The town lies approximately 17 km south of the Nairobi Central Business District and to the east of the Ngong hills.
According to data from the 2019 Census, Ongata Rongai is the most populous town in Kajiado County. It ranks as the eleventh largest urban centre by population in Kenya.