Coordinates: 1°40′S 36°51′E / 1.667°S 36.85°E / -1.667; 36.85 Isinya is a town and one of seven administrative divisions of the Kajiado District, part of the Rift Valley Province in the southern part of Kenya. Isinya, located at -1.67 latitude, 36.85 longitude, is 100 km south of Nairobi and 15 km north of Kajiado, the capital of the district.
The town of Isinya is situated along the Nairobi-Arusha highway.
Isinya has a private airfield called Orly Airpark, often mistakenly thought to be named after Orly Airport in Paris. The name Orly is actually short for the name of area where the airfield is based, Olooloitikosh. . Some pilots and aviation schools prefer the airfield over Wilson Airport in Nairobi, due to lower costs.
The mineral gypsum is mined in this area.