Wadi Jallal (Arabic: وَادِي جَلاَّل, romanized: Wādī Jallāl) is a village located in the Al Wakrah municipality of Qatar. It is located approximately 37 kilometres (23 mi) from the capital Doha.

As the area is typified by a wadi (dry river-valley) which would flood during heavy rains, it was named "Wadi Jallal"; the second constituent being derived from the Arabic "jalaa", meaning "to wash away".

Wadi Jallal is situated in south-central Qatar. The village of Al Kharrara is nearby. It forms part of the southern desert region, which occupies 34.7% of Qatar's total area. Of the four sub-regions of the southern desert, Wadi Jallal is a part of the southern zone of the Miocene-Tiwar sub-area.

The area around Wadi Jallal is part of a region characterized by Miocene-era formations that are distinct from the surrounding older rock types. In terms of terrain, Wadi Jallal is part of a region characterized by a mix of rocky plains (hamada), hills and sand dunes. As a wadi (valley), it represents a depression in the landscape.