Keros is an uninhabited Greek island in the Cyclades about 10 km (6 mi) southeast of Naxos. Administratively it is part of the community of Koufonisi. It has an area of 15 km2 (6 sq mi) and its highest point is 432 metres (1,417 ft). It was an important site to the Cycladic civilization that flourished around 2500 BC.
Keros is especially noted for the flat-faced Cycladic marble statues which later inspired the work of Pablo Picasso and Henry Moore.