Washukanni (or Waššukanni) was the capital of the Hurrian kingdom of Mitanni, from c. 1500 BC to the 13th century BC. Its precise location is unknown. A proposal that locates it under the largely unexcavated mound of Tell el Fakhariya, near Tell Halaf in Syria, is rejected by Edward Lipinski.
The city is known to have been sacked by the Hittites under Suppiluliumas I (reigned c.1344–1322 BC) in the first years of his reign, whose treaty inscription relates that he installed a Hurrian vassal king, Shattiwaza. The city was sacked again by the Assyrian king Adad-nirari I around 1290 BC, but very little else is known of its history.