Argos (; Greek: Άργος [ˈarɣos]; Ancient and Katharevousa: Ἄργος [árɡos]) is a city and former municipality in Argolis, Peloponnese, Greece and is one of the oldest continuously inhabited cities in the world, and 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.
Since the 2011 local government reform it has been part of the municipality of Argos-Mykines, of which it is a municipal unit. The municipal unit has an area of 138.138 km. It is 11 kilometres (7 miles) from Nafplion, which was its historic harbour. A settlement of great antiquity, Argos has been continuously inhabited as at least a substantial village for the past 7,000 years.