Mykonos (Greek: Μύκονος) is a Greek island and a tourist destination, renowned for its cosmopolitan character and its intense nightlife. The island is part of the Cyclades, lying between Tinos, Syros, Paros and Naxos. It spans an area of 105.183 km2 (41 sq mi) and rises at an elevation of 341 m (1,119 ft) at its highest point. The island is composed primarily of granite. It has little natural fresh water and relies on the desalination of sea water in order to meet its needs. There are 9,320 inhabitants (2001) most of whom live in the largest town, Mykonos, also known as Chora (i.e. the Town in Greek, a common denomination in Greece when the name of the island itself is the same as the name of the principal town), which lies on the west coast.

It is believed that the island was named after a local hero, who is considered an offspring of the god Apollo and was worshipped locally in antiquity.