In Goidelic mythology, Badb (raven) or in modern spelling Badhbh was a goddess of war who took the form of ravens (or carrion crows), thus known as Badb Catha (battle raven). She often caused confusion among soldiers to move the tide of battle to her favored side. Battlefields were called the land of Badb, and were often said to include Badb taking part as a raven or as a wolf. Badb is associated with the beansidhe, and is said to have been crucial in the battle against the Fomorians.

With Macha and Anann, she was part of a triumvirate of war goddesses.