- 2 MayRemoval of the Relics of St. Athanasius the Great
- 3 MaySaints Timothy and Maura The Martyrs
- 4 MaySaint Pelagia the Nun-martyr of Tarsus
- 5 MaySaint Irene the Great Martyr
- 6 MayJob the Prophet
- 7 MayAkakios the Centurion of Byzantium
- 7 MayCommemoration of the Precious Cross that appeared in the sky over Jerusalem in 351 A.D.
- 7 MayJob the Prophet
- 8 MaySaint Arsenios the Great
- 8 MayJohn the Apostle, Evangelist, & Theologian
- 9 MayThe Holy Prophet Esaias (Isaiah)
- 9 MaySaint Christopher the Martyr
- 10 MaySimon the Zealot & Apostle
- 11 MaySaints Cyril and Methodius
- 11 MayHieromartyr Mocius
- 12 MaySaint Epiphanius the Bishop of Cyprus
- 12 MaySaint Germanus the Patriarch of Constantinople
- 13 MayThe Holy Martyr Glyceria
- 14 MaySaint Isidore the Martyr of Chios
- 15 MaySaint Achilles The Bishop of Larissa
- 15 MaySaint Pachomius the Great
- 16 MaySaint Theodore the Sanctified
- 17 MayThe Holy Apostles Andronicus and Junia
- 21 MayEqual of the Apostles and Emperor Constantine with his Mother Helen
- 26 MaySaint Carpus the Apostle
- 27 MaySt John the Russian and Confessor
