Argos is a city in Greece in Peloponnese near Nafplio. In Homeric times it belonged to a follower of Agamemnon and gave its name to the surrounding district - the Argolid. Eclipsed by nearby Sparta after the 6th century BC,

Argos remained neutral or the ineffective ally of Athens during the 5th century BC struggles between Sparta and Athens.

Considerable remains of the city survive and are a popular tourist attraction.

Argos is also:
The short name for the Toronto Argonauts of the CFL
The name of the ship on which Jason and the Argonauts sailed was the Argo, not the Argos.