Mirebeau (French pronunciation: [miʁbo]; Occitan: Mirabeu; Poitevin: Mirebea) is a commune in the Vienne department, in the region of Nouvelle-Aquitaine, western France.

Fulk Nerra (970–1040), Count of Anjou conquered Mirebeau and built a castle there.

His son, Geoffrey of Anjou, defeated William VI, Duke of Aquitaine and Count of Poitou at the battle of Moncontour on September 20, 1033, and from that date Mirebeau belonged to the county of Anjou until 1790, and the replacement of the old provinces by departements during the French Revolution.

The latter took the city and was about to storm the castle when Eleanor managed to flee, rescued by the arrival of her son John, King of England on August 1.

Eleanor, Fair Maid of Brittany sister of Arthur was also supposed to be captured in this battle as well and would never be released.