External view of the monastery.
|Full name||Holy Monastery of Konstamonitou|
|Dedicated to||Saint Stephen|
|Founder(s)||Constantine the Great|
|Prior||Archimandrite Elder Agathon|
|Location||Mount Athos, Greece|
|Public access||Men only|
The Konstamonitou Monastery (Greek: Μονή Κωνσταμονίτου) or Kastamonitou Monastery (Μονή Κασταμονίτου) is an Orthodox Christian monastery in the monastic state of Mount Athos in Greece. It stands on the southeastern side of the Athos peninsula. The monastery ranks twentieth in the hierarchy of the Athonite monasteries.
The monastery was founded in the 11th century. It is dedicated to Saint Stephen.
The monastery has about 20 working monks.
The monastery library holds 110 manuscripts and approximately 5,000 printed books.