In Greek mythology, Inachus, Inachos or Inakhos was the first king of Argos after whom a river was called Inachus River, that drains the western margin of the Argive plain.

Argos is a city and former municipality in Argolis, Peloponnese, Greece and is one of the oldest continuously inhabited cities in the world, and one of the oldest in Europe. It is the largest city in Argolis and a major center in the same prefecture, having nearly twice the population of the prefectural capital, Nafplio.