The Two Babylons, subtitled The Papal Worship Proved to Be the Worship of Nimrod and His Wife is a religious pamphlet published in 1853 by the Presbyterian Free Church of Scotland theologian Alexander Hislop (1807–65).

Its central theme is its allegation that the Catholic Church is a veiled continuation of the pagan religion of Babylon, the product of a millennia-old secret conspiracy founded by the Biblical king Nimrod and the Assyrian queen Semiramis, whom Hislop claimed was Nimrod's wife. It claims that modern holidays, including Christmas and Easter, were actually festivals established by Semiramis and that all of the customs associated with them are secretly pagan rituals.

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