Olympos, Mountain summit in south Lesbos, Greece.

Olympos is a limestone mountain in southern Lesbos whose main summit, Profitis Ilias, reaches 967 m, with the lower Skotino (914 m), Psilokoundouno and Soroko peaks around it. It forms a broad massif between the Geras area and the Polichnitos plain, from the Evergetoulas river to the coast at Plomari. Its slopes carry Calabrian pine, chestnut and black pine, with plane trees and walnuts in the ravines.

The mountain's slopes have been inhabited since at least the Byzantine era, with villages such as Agiasos and Asomatos established on its flanks. In the 1990s, deer were released into its forests, and wild boar were introduced to the island. The massif is now part of the Natura 2000 network as Oros Olympos Lesvou (site GR4110011), recognised for its birds and habitats.

The mountain's slopes hold several villages, among them Agiasos, Asomatos, Ampeliko, Megalochori, Palaiochori, Neochori, Akrasi, Skopelos and Mesagros. Agiasos, the largest, is a small town in the eastern part of the massif; the villages of the south and southwest belong to the municipality of Plomari, those on the eastern fringes to Geras.

The massif lies between the Geras area in the east, the Polichnitos plain in the west and the Plomari coast in the south; villages such as Agiasos, Asomatos and Ampeliko sit on its slopes. The Evergetoulas, Vouvaris and Sedountas streams rise here, the Sedountas flowing through Plomari to the Aegean. Olive groves climb to about 450 m, and the Sanatorio site holds planted firs mixed with chestnut and Calabrian pine.

The massif is part of the Natura 2000 network as Oros Olympos Lesvou, site GR4110011. Wild boar were introduced to Lesbos in recent times, and deer released in the early 1990s also roam the slopes, alongside the Aegean island fauna.