Calogerus the Anchorite (Greek: , , or Calocerus, and Caloriu, , also known as Calogerus the Hermit and Calogerus of Sicily, Chalcedon c. 466 - 18 June, 561, Monte Kronio) was a hermetical monk, venerated as a saint by the Catholic and Orthodox churches, and the patron of many places in Sicily.