According to the Book of Revelation in the New Testament of the Christian Bible, Armageddon (, from Ancient Greek: Ἁρμαγεδών Harmagedōn, Late Latin: Armagedōn, from Hebrew: הַר מְגִדּוֹ‎ Har Məgīddō) is the prophesied location of a gathering of armies for a battle during the end times, which is variously interpreted as either a literal or a symbolic location. The term is also used in a generic sense to refer to any end of the world scenario. In Islamic theology, Armageddon is also mentioned in Hadith as the Greatest Armageddon or Al-Malhama Al-Kubra (the great battle).

The "mount" of Megiddo in northern Israel is not actually a mountain, but a tell (a mound or hill created by many generations of people living and rebuilding on the same spot) on which ancient forts were built to guard the Via Maris, an ancient trade route linking Egypt with the northern empires of Syria, Anatolia and Mesopotamia. Megiddo was the location of various ancient battles, including one in the 15th century BC and one in 609 BC. The nearby modern Megiddo is a kibbutz in the Kishon River area.