Achaemenes (or Hakhamanesh), fl. early 7th C. BC, was the possibly legendary founder of the Achaemenid dynasty, the founders of the Persian Empire. If he existed he probably ruled Persis in the first half of the seventh century BC. Persis probably came under the control of the Median Empire during this period, although the Assyrians were also a major power at the time. Achaemenes was followed by his son Teispes.
It is possible that Achaemenes led a joint army from Parsumash and Anshan against Sennacherib of Assyria in 681 BC, the last year of Sennacherib's reign.