Urartu (Armenian: Ուրարտու - Urartu, Assyrian: māt Urarṭu;Babylonian: Urashtu), corresponding to Ararat (Armenian: Արարատյան Թագավորություն) or Kingdom of Van (Armenian: Վանի Թագավորություն, Urartian: Biai, Biainili;) was an Iron Age kingdom centered around Lake Van in the Armenian Highlands.
Strictly speaking, Urartu is the Assyrian term for a geographical region, while "kingdom of Urartu" or "Biainili lands" are terms used in modern historiography for the Iron Age state that arose in that region. That a distinction should be made between the geographical and the political entity was already pointed out by König (1955). The landscape corresponds to the mountainous plateau between Asia Minor, Mesopotamia, and the Caucasus mountains, later known as the Armenian Highlands. The kingdom rose to power in the mid 9th century BC, but was conquered by Media in the early 6th century BC.
The name Urartu comes from Assyrian sources: the Assyrian King Shalmaneser I (1263–1234 BC) recorded a campaign in which he subdued the entire territory of "Uruatri". The Shalmaneser text uses the name Urartu to refer to a geographical region, not a kingdom, and names eight "lands" contained within Urartu (which at the time of the campaign were still disunited). The kingdom's native name was Biainili, also spelt Biaineli, (from which is derived the Armenian toponym Վան "Van"), but prior to the 8th century BC, they also called their now united kingdom "Nairi". Scholars believe that Urartu is an Akkadian variation of Ararat of the Old Testament. Indeed, Mount Ararat is located in ancient Urartian territory, approximately 120 km north of its former capital. In addition to referring to the famous Biblical mountain, Ararat also appears as the name of a kingdom in Jeremiah 51:27, mentioned together with Minni and Ashkenaz.