Donousa (Greek: Δονούσα, also Δενούσα Denousa), and sometimes spelled Donoussa, is an island and a former community in the Cyclades, Greece.

Its area is 13.75 square kilometres (5.31 sq mi)[3] and its highest point is 385 metres (1,263 ft).

Other villages include Mersini (on the southeastern coast), Kalotaritissa (near its northern coastline) and Charavgi (in the south).

[4][5] Tracing all the way back to ancient Greek mythology in the prehistoric times, Dionysus, the god of winemaking and wine, took Ariadne from Naxos to hide her from Theseus.

When visiting the Agios Stavros port and town, one will find a variety of taverns, cafes, bakeries, mini markets, rooms for rental and other touristic facilities.