Akrotiri (Greek: Ακρωτήρι, literally "promontory") is a peninsula and former municipality in the Chania regional unit, Crete, Greece.

It is roughly circular in shape, connected to the rest of the island by a wide causeway between Chania and the town of Souda.

At this site, the Greek flag was raised in defiance of the Turks and the Great Powers, with the peninsula acting as a headquarters of the Cretan Revolution [fr].

Aghia Triada dates from the 17th Century and was founded by two Venetian monks who had joined the Orthodox church, Jeremiah and Laurentio Giancarolo.

The imposing buildings are visible across the plateau and from planes arriving at the airport and are set in olive and orange groves.

This cave is believed to have been used for worship since ancient times (as there is evidence for cults of Artemis and Apollo), but was dedicated to the Arkoudiotissa Panaghia (Our Lady) during the Christian era.