Tiaret or Tahert is a major city in northwestern Algeria that gives its name to the wider farming region of Tiaret Province. Both the town and region lie south-west of the capital of Algiers in the western region of the Hautes Plaines, in the Tell Atlas, and about 150 km (93 mi) from the Mediterranean coast. It is served by Abdelhafid Boussouf Bou Chekif Airport.

The Hautes Plaines, also known in French as Hauts Plateaux, is a steppe-like natural region located in the Atlas Mountains in northern Algeria. It stretches more than 600 km (370 mi) in an east northeast – west southwest direction from northeastern Morocco to the Aures. It is a high plateau area consisting of undulating, steppe-like alluvial plains lying between the Tell and Saharan Atlas ranges.