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Athanasios

♂ Boy

Pronounced ah-thah-NAH-see-os /ˌɑ.θɑˈnɑ.si.ɑs/Medium

Meaning: From Greek athanasios, 'immortal, deathless' (a, 'without', plus thanatos, 'death') — St AthanasiusHigh

In 30 seconds: Immortal and grand: Athanasios is Greek for 'deathless' — borne by the great St Athanasius. Stately, devout, and proud.

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Origin HighGreek

MeaningFrom Greek athanasios, 'immortal, deathless' (a, 'without', plus thanatos, 'death') — St Athanasius

U.S. rank (2025)#4557 ↘ Falling

2025 U.S. births22 boys (0.00% of U.S. boys)

Peak year1973

Total births (all-time)≈ 1,282

Popularity in the U.S. · SSA data

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Athanasios comes from Greek athanasios, 'immortal, deathless' (a-, 'without', plus thanatos, 'death') — borne by St Athanasius of Alexandria. A stately, devout name across Greece, with the nickname Thanasis.

In the U.S. it appears in Greek families. Rare, immortal at the root, and stately.

Did you know? Athanasios means 'immortal, deathless' in Greek — borne by St Athanasius of Alexandria, a towering Church Father; a stately Greek classic (nickname Thanasis/Thanos).

Overall data confidence 82%

Behind the Name — Athanasios — etymology

Variations

AthanasiusThanasisAthanas

Nicknames

ThanasisThanos

Famous Bearers

★Athanasios Diakos (1788-1821)
Greek military commander and hero of the Greek War of Independence
★Athanasios Papageorgiou
Greek basketball coach who has led the Greek national team and various European clubs

If you like Athanasios…

Athanasius— the Latin form

Dimitrios— a fellow Greek classic

Alexandros— a similarly popular pick

Alexios— another Greek name

Georgios— another Greek name

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Frequently Asked

What does the name Athanasios mean?

Athanasios is Greek for 'immortal, deathless'.

How do you pronounce Athanasios?

It's said ah-thah-NAH-see-os /ˌɑ.θɑˈnɑ.si.ɑs/ — stress on the third syllable.

Is Athanasios a boy or girl name?

Athanasios is a boy's name.

How popular is Athanasios?

Athanasios is a rare name in the U.S.