Bêl (/ˈbeɪl/; from Akkadian: bēlu) is a title signifying 'lord' or 'master' applied to various gods in the Mesopotamian religion of Akkad, Assyria, and Babylonia. The feminine form is Bêlit ('Lady, Mistress') in Akkadian. Bel is represented in Greek as Belos and in Latin as Belus. Belit appears in Greek form as Beltis (Βελτις). Linguistically, Bel is an East Semitic form cognate with the Northwest Semitic Baal with the same meaning.
Bel was especially used for the Babylonian god Marduk in Assyrian and neo-Babylonian personal names or mentioned in inscriptions in a Mesopotamian context. Similarly, Bêlit mostly refers to Marduk's spouse Sarpanit. Marduk's mother, the Sumerian goddess often referred to in the Sumerian language as Ninhursag, Damkina, and Ninmah, was often known as Belit-ili ('Lady of the Gods') in Akkadian.