Matiene was the name of a kingdom in northwestern Iran on the lands of the earlier kingdom of the Mannae. Ancient historians including Strabo, Ptolemy, Herodotus, Polybius, and Pliny, mention names such as Mantiane, Martiane, Matiane, Matiene, to designate a region located to the northwest of Media."
The name Matiene is believed to be related to Mitanni which was founded by an Indo-Aryan ruling class governing the Hurrian population. The name Matiene was applied also to the neighboring Lake Matianus (Lake Urmia) located immediately to the east of the Matieni people.
The Mannaeans who probably spoke a Hurro-Urartian language, were subdued by the Scytho-Kimmerians during the seventh and eighth centuries BC. Matiene was ultimately conquered by the Medes in about 609 BCE.
Matiene became a satrapy of the Median Empire until the Persian conquest, when alongside of the Kartvelian tribes - Saspires and Alaradians (remnants of Urartians) it became a part of the XVIII satrapy of the Achaemenid Empire.
The land of Matiene was twice the size of Armenia and it was surrounded to the north by Armenia, to the east by Media, to the south by Susiana, and to the west by Assyria. Its chief city was Matiati around Lake Van. There seems to be another Matiane located in central Asia Minor.
Cimmerians were said to have originated from the Matiani by Herodotus, moving west into Anatolia along the south shore of the Black Sea. Herodotus also said that later, in Median times, there was a second site called Matiene, along the eastern shore of the Halys river in northwestern Cappadocia across the river from the Phrygians. He stated they wore the same uniform as the Paphlagonians in the Median and Persian armies, meaning their units were combined with the Paphlagonians. It is not at all clear whether these western Matieni were descendants of the Cimmerians, a group of Paphlagonians just called by this name, actual (eastern) Matieni who migrated west from Matiene on their own, or a Median military colony on the border with Phrygia and later the Lydian empire.