The Kassites were an ancient Near Eastern people who gained control of Babylonia after the fall of the Old Babylonian Empire after ca. 1531 BC to ca. 1155 BC (short chronology).
The Kassite language is thought to have been related to Hurrian, and not Indo-European or Semitic although the evidence for its genetic affiliation is meager due to the scarcity of extant texts. However, several Kassite leaders bore Indo-European names, and they might have had an Indo-European elite similliar to the Mitanni.