Astros (Greek: Άστρος ) is a town near the Argolic Gulf in the northeast Peloponnese in eastern Arcadia.

It is the seat of North Kynouria municipality (Greek: Βόρεια Κυνουρία) and is accessible by the road connecting Corinth and Argos to the south.

The name of the town, built during the Greek War of Independence, is supposed to be taken from the ancient settlement Astron, mentioned in Ptolemy's Geography.

[2] Astros was the site of the Second National Assembly of the Hellenes during the Greek War of Independence, under the presidency of Petros Mavromichalis.

Much of its land is rocky and bushy and unsuitable for cultivation, but there are some farms and groves in low-lying areas near town.