Achinos (Greek: Αχινός) is a village and a former municipality in the Serres regional unit, Greece.

Since the 2011 local government reform it is part of the municipality Visaltia, of which it is a municipal unit.

Other communities in the municipal unit are Dafni, Zervochori, Lefkotopos, Patrikio and Choumniko.

The name Achinos is the Greek word for sea urchins.

This Central Macedonia location article is a stub.