Arzawa is a region or kingdom in what was later to be known as Lydia in Western Anatolia. It was the western neighbour and sometimes vassal of the Hittites, and probably bordered on the Assuwa league to the north. The language spoken in Arzawa during the Bronze Age and early Iron Age was Luwian, a member of the Anatolian branch of the Indo-European family.
The height of the kingdom was in the 15th and 14th century BC. The Hittites were weakened and Arzawa was an ally of Egypt, as recorded in the Amarna letters. The Hittite king Suppiluliuma I, however, finally managed to defeat Arzawa, which were split into vassal kingdoms called Mira, Seha and Hanballa. Independent "Neo-Hittite" states re-emerged in the region after the collapse of the Hittite Empire from the 12th century.