Indo-Aryan superstrate in Mitanni

Some loanwords in the variant of the Hurrian language spoken in the Mitanni kingdom, during the 2nd millennium BCE, are identifiable as originating in an Indo-Aryan language; these are considered to constitute an Indo-Aryan superstrate in Mitanni (or in Mitanni Hurrian). The words in question are theonyms, proper names and technical terminology related to horses (hippological).

It is generally believed that an Indo-Aryan-speaking people settled in upper Mesopotamia and northern Syria, and established the kingdom of Mitanni following a period of political vacuum, while also adopting the Hurrian language. The migration is considered a part of the Indo-Aryan migration.