Argos (ˈɑːrgɒs,_-gəs; Άργος ˈarɣos; Ἄργος árɡos) is a city 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 km2. It is 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.
A resident of the city of Argos is known as an Argive (ˈɑːrgaɪv , -dʒaɪv ; Ἀργεῖος). However, this term is also used to refer to those ancient Greeks generally who assaulted the city of Troy during the Trojan War; the term is more widely applied by the Homeric bards.
Numerous ancient monuments can be found in the city today. Agriculture is the mainstay of the local economy.
There are several proposed etyma. The name is associated with the legendary Argus, the third king of the city in ancient times, who renamed it after himself, thus replacing its older name Phoronikon Asty (Φορωνικόν Άστυ, "Citadel of Phoroneus"). Both the personal name and placename are linked to the word αργός (argós), which meant "white" or "shining"; possibly, this had to do with the visual impression given of the Argolic plain during harvest time. According to Strabo, the name could have even originated from the word αγρός "field" by antimetathesis of the consonants.
Herodotus first recorded the myth of the traditional story of Argos being the origin of the ancient Macedonian royal house of the Argead dynasty (Greek: Ἀργεάδαι, Argeádai) of Philip II and Alexander the Great. As a strategic location on the fertile plain of Argolis, Argos was a major stronghold during the Mycenaean era.