Name days on March 23
Saints and feasts of March 23

Nikon
Martyr, Νίκων
St. Nikon lived in the third century. A soldier's son who came to faith in Christ, he was baptized, embraced the monastic life, and was later made a bishop, gathering many disciples whom he guided in prayer and asceticism. Fleeing persecution, he settled with them in Sicily.
Name days: Nikon
Luke of Adrianople
Martyr, Λουκάς ο Αδριανουπολίτης
St. Luke was born in Adrianople in Thrace at the end of the eighteenth century and, as a boy, was carried off by Turks and forced to accept Islam. Escaping to Mount Athos, he returned to Christ and became a monk at the skete of St. Anne, and later, longing for martyrdom, went to Mytilene.
Dometios the Martyr
Martyr, Δομέτιος ο Μάρτυς
St. Dometios is a martyr whose name the Greek synaxaria record for March 23 with the note that he completed his witness by the sword. Nothing further of his life has been preserved.
Pachomios the Anchorite
Venerable, Παχώμιος ο Αναχωρητής
St. Pachomios the Anchorite is a venerable father whom the Greek synaxaria commemorate on March 23 with the note that he reposed in peace. Nothing further of his life has come down to us.
Nikon of the Kiev Caves
Venerable, Νίκων των Σπηλαίων
St. Nikon was one of the first companions of St. Anthony of the Kiev Caves in the eleventh century, a priest who tonsured many of the early monks of the Lavra, including St. Theodosius. He spent some years in a monastery he founded near the Sea of Azov and returned to become abbot of the Caves, where he adorned the great church with icons.