The Xenophontos Monastery (Greek Ξενοφώντος) is one of the twenty monasteries located on the peninsula of Mount Athos in northeastern Greece. The monastery is on southwestern side of the peninsula near St. Panteleimon's Monastery. Xenophontos ranks sixteenth in the hierarchical order on Mount Athos. The monastery is dedicated to St. George the Trophybearer, celebrating the monastery feast day on April 23. The library of Xenophontos contains over 4,000 printed books and some 300 manuscripts.