Patmos (Greek: Πάτμος, pronounced [ˈpatmos]) is a small Greek island in the Aegean Sea. It is the location of the vision given to the disciple John in the Book of Revelation in the New Testament, and where the book was written.
One of the northernmost islands of the Dodecanese complex, it has a population of 2,998 and an area of 34.05 km2 (13.15 sq mi). The highest point is Profitis Ilias, 269 metres (883 ft) above sea level. The municipality of Patmos, which includes the offshore islands of Arkoi (pop. 44), Marathos (pop. 5), and several uninhabited islets, has a total population of 3,047 (2011 census) and a combined land area of 45.039 square kilometres (17.390 sq mi). It is part of the Kalymnos regional unit.
Patmos’ main communities are Chora (the capital city), and Skala, the only commercial port. Other settlements are Grikou and Kampos. The churches and communities on Patmos are of the Eastern Orthodox tradition.