The Cadusii people were an Iranian people that lived in a mountainous district of Media Atropatene on the south-west shores of the Caspian Sea, between the parallels of 39° and 37° North latitude, called for its inhabitants Cadusia. This district was probably bounded on the North by the river Cyrus (today Kura, in the former Soviet Republic of Azerbaijan, historically known as Arran and Caucasian Albania), and on the South by the river Mardus (today Sefid River), and corresponds with the modern Iranian provinces of Gilan and Ardabil. They are described by Strabo as a warlike tribe of mountaineers, fighting chiefly on foot, and well skilled in the use of the short spear or javelin.