Al Mansouryah or Mansouryat Al-Jabel (Arabic: المنصورية) is a subdistrict of Al-Khalis District in the Diyala Governorate of Iraq, roughly 110 km north-east of Baghdad city, situated between the Diyala and Khalis rivers.

The town and its surroundings are one a very few places in the Diyala Province where Sunnis form a vast majority--nearly the totality--of the population.

Most inhabitants work in agricultural activities due to the area's fertile soil and plentiful water.

[4] A gas power plant built by the French Astom company is located in the subdistrict (coordinates 34°08′50″N 44°56′06.6″E / 34.14722°N 44.935167°E / 34.14722; 44.935167).

12 December 2011, Astom signed a contract worth $500 million with Iraqi ministry of Electricity to build the Al Mansouryah gas-fired power plant.