Worldwide, Αθανάσιος (Athanasios 
, Athanassios 
, Αθανάσιος ) is a widespread male forename. The first name Αθανάσιος is habitual in Greece, where it is a prevalent masculine name, Cyprus, where it is quite a rare masculine name, and Germany. In absolute terms, it is the most numerous in Greece, Germany, and the United States. Also, Αθανάσιος is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Athanasios | Germany, Cyprus, United Kingdom, United States, Greece |
| Athanassios | Germany, United Kingdom, South Africa, United States, Greece |
| Αθανάσιος | Greece |
Afanasij, Afanassi, Afanasy, Apanas, Atanas, Atanasije, Atanasio, Atanasios, Atanazy, Atanáz, Athanase, Athanasis, Athanasius, Nasos, Sakis, Thanasakis, Thanasis, Thanasos, Thanasoulas, Thanos, Thasos, Αθανάσης, Αθανασία, Θάνος, Θάσος, Θανάσης, Νάσος, Σάκης, Апанас, Атанас, Атанасиос, Атанасій, Афанас, Афанасий, Афанасиос, Афанасиус, Афанасі, Афанасій, Афоня, Опанас, Панас, and Танасий
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αθανάσιος ο αθωνίτης Byzantine monk, TR (b. 920) |
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αθανάσιος γ΄ αλεξανδρείας Greek Orthodox Patriarch of Alexandria, GR (b. 1250) |
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αθανάσιος ο μετεωρίτης Greek monk, GR (b. 1302) |
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αθανάσιος γ΄ πατελάρος Ecumenical Patriarch of Constantinople, GR (b. 1597) |
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| αθανάσιος σκληρός GR (b. 1580) |
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αθανάσιος ε΄ Patriarch of Constantinople, GR (b. 1650) |
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αθανάσιος κοντοειδής GR (b. 1677) |
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αθανάσιος κανακάρης Greek politician, GR (b. 1759) |
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αθανάσιος ψαλίδας Greek writer, GR (b. 1767) |
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αθανάσιος χριστόπουλος Greek poet, GR (b. 1772) |
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| αθανάσιος ο πάριος Greek hieromonk, GR (b. 1722) |
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| αθανάσιος ὁ πάριος Greek saint (b. 1722) |
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αθανάσιος διάκος είστε τέλειοι Greek general, GR (b. 1788) |
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αθανάσιος τσακάλωφ Greek independence activist, GR (b. 1790) |
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αθανάσιος γρηγοριάδης Greek politician, GR (b. 1793) |
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Μακρής, Μπάρκας, Αναγνωστόπουλος, Ζαχαρής, Δημητρίου, Αθανασίου, Στεργίδης, Τερζής, Αργυρόπουλος, Καρακώστας, Δεληγιάννης, Γεωργούσης, Παπαδόπουλος, and Κωνσταντίνου