The Vale of Arryn or the Vale is one of the constituent regions of the Seven Kingdoms of Westeros. It was formerly a sovereign nation ruled by the Kings of Mountain and Vale before Aegon's Conquest. The Mountains of the Moon surround the smaller Vale proper,[2] although the valley's name is often applied to all of House Arryn's realm.[3]

The Vale is ruled by the Arryns from the castle known as the Eyrie. Notable houses of this region include Baelish, Belmore, Corbray, Egen, Grafton, Hersy, Hunter, Melcolm, Redfort, Royce, Templeton, and Waynwood.[4][5] Bastards of noble origin raised in the Vale are given the surname Stone.[6]