Al Dhannah is a city located 240 km (150 mi) west of Abu Dhabi City, in the Western Region of the Emirate of Abu Dhabi. The city’s former name, "Al Ruwais", is largely dropped in relation to the Ruwais Refinery and other industrial development.

Al Dhafra Region, known until 2017 as Al Gharbia or the Western Region, is one of three Municipal Regions in the Emirate of Abu Dhabi. Forming the western part of the United Arab Emirates, it is by far the largest region by area, occupying 71 % of the Abu Dhabi emirate's total area, yet the smallest by population and population density, and thus a rather remote region of the Emirate of Abu Dhabi, similar to the Eastern Region. The capital of Al Dhafra Region is Madinat Zayed. The new official name was already the historical name of the westernmost region of former Trucial Oman, which was Dhafrah. It is significant for its natural resources, particularly gas and petroleum. Its reserves of hydrocarbons account for 90% of the Emirate's reserves, which in turn account for 90% of the country's reserves, and are important for the local economy.