Al Kharj (Arabic: الخرج), also known locally as Al Saih (Arabic: السيح), is a city in Al Kharj Governorate in central Saudi Arabia. Al Kharj is 77 km south of Riyadh.
It is connected by rail to both Riyadh and Dammam. The city's main landmarks includes the historical water wells, and King Abdulaziz Palace and Mosque.
One of the main Royal Saudi Air Force bases, Prince Sultan Air Base 24°03′48″N 47°34′50″E / 24.06333°N 47.58056°E, located in Al Kharj, is home to several fleets of F-15s. The base was home to about 60,000 coalition forces during the 1991 Gulf War.
Under the leadership of King Abdulaziz, who first took initiative for the production of milk in the kingdom, an experimental farm was established at Al-Kharj in 1938.
Coordinates: 24°8′54″N 47°18′18″E / 24.14833°N 47.30500°E.