Annebault (French pronunciation: [anbo] ⓘ) is a commune in the Calvados department in the Normandy region in northwestern France.

The village Annebault was first mentioned as Olnebac in the beginning of the 12th century, and as Ounebaus in 1195.

French linguist René Lepelley has proposed that the name comes from the Old Norrois "almr balkr", or "splitting of the elm".

[3] On the other hand, Ernest Nègre, toponymist and specialist in Occitan, has offered that it is derived from the Germanic personal name Allinus followed by the Old Norse bekkr.

The vestiges of a feudal moat, possibly dating to the tenth century, can be found to the south of the town, in the nearby forest.