Plakias (Greek: Πλακιάς) is a village on the south coast of the Greek island of Crete, in the Rethymno regional unit, about 21 kilometres south of the city of Rethymno. It is part of the municipality Agios Vasileios, and of the municipal unit Foinikas. It is surrounded by mountains to the north and the Libyan Sea to the south. The name in Greek means "flat", because the town stands on an alluvial fan of material that has washed down the Kotsifou gorge directly to the north . This material has formed along the sea's edge into a long, fine, gold-hued sand beach, which shelves very gradually out into the bay, making it quite safe for swimming and hence, for family holidays.

Plakias has a 1300-metre-long sandy beach and there are several other beaches within walking distance (Souda, Damnoni, Ammoudi, and Skhinaria). The southeastern end of the beach, near the Kakomouri headland, is used by nudists. The town is not on any major passage for traffic and hence traffic is minimal and it is quieter and less dusty than many other Greek resorts.