Symeon Stylites of Lesbos was a ninth-century Byzantine monk who practiced stylitism, a form of asceticism involving residence on a high pillar. Born around 765 or 766, he lived a life of isolation, prayer, and study, often emulating the earlier Simeon Stylites. During the second period of Byzantine Iconoclasm, he became a prominent opponent of the movement, facing multiple attempts on his life and several periods of exile. He was known for his travels throughout the Aegean and Asia Minor, where he supported persecuted clergy and assisted the needy.