Hesychius of Sinai was a Byzantine monk and abbot who served at Saint Catherine's Monastery on Mount Sinai. Living during the 7th century, he was an ascetic author whose literary contributions have survived only in fragments. Because several historical figures shared his name, scholars often distinguish him from Hesychius of Jerusalem by analyzing his specific biblical citations, which frequently align with the Codex Sinaiticus. He is recognized as a significant figure in early ascetic literature within the Eastern Orthodox tradition.