It keeps the same day as the name it comes from — everything below is that name’s.
Key facts
Athanasios at a glance
Name day
18 January
This year · 2026
Sunday, 18 January
Next year · 2027
Monday, 18 January
Variations
Forms & nicknames of the name
One name takes many forms — the formal, the everyday, the affectionate, and the spellings that travelled abroad. Each has its own page here, and all share the same day.
Greek forms
English & romanised
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