Meteora is a rock formation complex in northwestern Greece, hosting one of the most prominent complexes of Eastern Orthodox monasteries, viewed locally as second in importance only to Mount Athos.

The Holy Monastery of Great Meteoron is the oldest and largest of the monasteries of Meteora. The monastery is believed to have been built just before the mid 14th century by a monk from Mount Athos named Saint Athanasios the Meteorite. He began the build with a church in dedication to the Mother of God, the Virgin Mary.

Twenty-four monasteries were established atop the giant natural pillars and hill-like rounded boulders that dominate the local area, mainly from the second half of the 14th century under the local rule of Simeon Uroš. Six of these are still active and open to visitors: the monasteries of Great Meteoron (est. 1356), Varlaam, Saint Nicholas Anapausas, Rousanou, Holy Trinity, and Saint Stephen. The latter became a community of nuns in 1961, whereas the former five remain managed by monks.

Meteora is located in between the town of Kalabaka and the village of Kastraki at the northwestern edge of the Plain of Thessaly near the Pineios river and Pindus Mountains. The Meteora complex was added to the UNESCO World Heritage List in 1988 because of its outstanding architecture and beauty, combined with religious and cultural significance.

The name means "lofty", "elevated", and is etymologically related to meteor.