| FULL FORMS |
| GREEK: Athanasios |
| EQUIVALENTS |
| ANCIENT GREEK: Athanas, Athanasios, Athanasius |
| BULGARIAN: Atanas, Tase |
| GREEK: Thanasis |
| MACEDONIAN: Atanas, Atanasij, Tase |
| MEDIEVAL SLAVIC: Athanasi |
| ROMANIAN: Atanase |
| RUSSIAN: Afanasiy, Afanasy |
| SERBIAN: Atanasije |
| FEMININE FORMS |
| ANCIENT GREEK: Athanasia |
| GREEK: Athanasia |
| MACEDONIAN: Atanasija |
| SERBIAN: Atanasija |