Athanasius may refer to the following saints:
- Athanasius of Alexandria (January 18), also known as Athanasius the Great
- Athanasius ο κομενταρήσιος (January 4)
- Athanasius of Attalia the Martyr (January 7), Gr. Άτταλείας
- Athanasius the Martyr (January 13)
- Athanasius the confessor (February 22)
- Athanasius the Martyr (March 9)
- Athanasius, founder of Meteora monasteries (April 20)
- Athanasius the Martyr (April 23), martyred from witchcraft.
- Athanasius, Bishop of Korinth (May 4)
- Athanasius the New, Bishop of Chriotianoupoleos (May 17)
- Athanasius, the virgin-miracle worker (June 3)
- Athanasius, the "Pentaskinitis" (June 20)
- Athanasius the Martyr, the unknown (June 23)
- Athanasius Parios (June 24)
- Athanasius of Athos (July 5)
- Athanasius the Martyr (July 18)
- Athanasius of Kios, the New-Martyr (July 24)
- Athanasius, the Priest martyr (August 22)
- Athanasius of Bretsk, the Russian (September 5)
- Athanasius of Thessalonica, the new-Martyr (September 8)
- Athanasius, the first Patriarch of Constantinople (October 28)
- Athanasius, the priest-martyr (October 29)
- Athanasius the Martyr (November 7)
- Athanasius the Russian, the 'Εγκλειστος (December 2)
- Athanasius of Limnos, new-martyr
- Athanasius the Demondestroyer (Gr. Δαιμονοκαταλύτης)
- Athanasius, Bishop of Chytron, Cyprus (Gr. Χυτρών, Κύπρου)
Athanasius also refers to a number of bishops:
- Pope Athanasius I of Alexandria (326-373)
- Pope Athanasius II of Alexandria (490-497)
- Pope Athanasius III of Alexandria (1270-1308)
- Pope Athanasius IV of Alexandria (1417-1429)
- Patr. Athanasius I of Antioch (1166-1180)
- Patr. Athanasius II Dabbas of Antioch (1611-1619)
- Patr. Athanasius III Dabbas of Antioch (1686-1694, 1720-1724)
- Patr. Athanasius I of Constantinople (1289-1293, 1303-1309)
- Patr. Athanasius II of Constantinople (1450-1453)
- Patr. Athanasius III (Patelaros) of Constantinople (1634)
- Patr. Athanasius IV of Constantinople (1679)
- Patr. Athanasius V of Constantinople (1709-1711)