Beelzebub or Beelzebul is a name derived from a Philistine god, formerly worshipped in Ekron, and later adopted by some Abrahamic religions as a major demon. The name Beelzebub is associated with the Canaanite god Baal.

In theological sources, predominantly Christian, Beelzebub is sometimes another name for the devil, similar to Satan. He is known in demonology as one of the seven princes of Hell. The Dictionnaire Infernal describes Beelzebub as a being capable of flying, known as the "Lord of the Flyers", or the "Lord of the Flies".

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