Ouaddaï may refer to:
*
Ouaddaï highlands, an area in eastern Chad along the border with Sudan
*
Ouaddaï Prefecture, a former political prefecture of Chad
*
Ouaddaï Region
Ouaddaï ( ar, وداي) is a region of Chad, located in the south-east of the country, with its capital at Abéché. Prior to 2002 it was known as Ouaddaï Prefecture; in 2008 the southern portions of Ouaddaï (the Sila Department and Djour ...
, a political region of Chad created in 2002
*
Wadai Empire
The Wadai Sultanate ( ar, سلطنة وداي ''Saltanat Waday'', french: royaume du Ouaddaï, Fur: ''Burgu'' or ''Birgu''; 1501–1912) was an African sultanate located to the east of Lake Chad in present-day Chad and the Central African Republi ...
(1635–1912), a kingdom located to the east of Lake Chad
*
Wadai War
The Wadai War (also known as "Ouaddai War") was waged by France and its African allies against the Wadai Empire and its allies from 1906 to 1912. Located in what today would be eastern Chad and western Sudan, Wadai fiercely resisted the French in ...
(1906-1911), between France and the Wadai Empire
{{dab, geodis