Karduniaš (also transcribed Kurduniash,[1][2] Karduniash or Karaduniše[3]) is a Kassite term used for the kingdom centered on Babylonia and founded by the Kassite dynasty.
It is used in the 1350-1335 BC Amarna letters correspondence, and is also used frequently in Middle Assyrian and Neo-Assyrian texts to refer to the kingdom of Babylon.
The etymology of the name combines the Semitic prefix "Kar" used to denote a city or land with a Kassite element "duniash" which is of uncertain meaning.
[4] There are two additional letters in the 382–letter Amarna corpus that reference Karaduniyaš.
Letter 255 by Mutbaal, about caravans, seems to imply that his location in western Jordan, (as "Mayor of Pihilu"-(modern Pella, Jordan)), was an important trade route to the east to Babylonia, or north to Mittani.