MallowbyNames

Athanasios

ah-thah-NAH-see-ohs · Immortal, from the Greek elements 'a-' (not) and 'thanatos' (death).

2025 rank (boys)
#4,539
Babies named in 2025
22
Peak popularity
1973
2025 frequency
1 in 77,640 boys
Usually for
Boys
Trend
Rising since 2019

A 1970s favorite, climbing again.

Popularity of Athanasios since 1959

Babies named Athanasios per year in U.S. Social Security records.

1326391960198020002020Most births 1973Boys
Data table (by decade)
DecadeBoys
1950s6
1960s69
1970s287
1980s195
1990s190
2000s220
2010s198
2020s119

Meaning & origin

Athanasios is a Greek masculine name meaning 'immortal,' rooted in early Christian history. In the United States, it first appeared on record in 1959 and reached its highest usage in 1973, during a period of renewed interest in heritage names among Greek-Americans. Since 2019, its popularity has been rising, though it remains rare nationally. The name is a classic choice within Greek Orthodox communities, often passed down through generations to honor a grandfather or saint. While its use outside the diaspora is limited, Athanasios carries a strong scholarly and religious legacy that appeals to families seeking a name with deep cultural and historical significance.

Athanasios derives from the Greek word 'athanatos' (ἀθάνατος), meaning 'immortal,' composed of the negative prefix 'a-' and 'thanatos' (death). The name was borne by several early Christian saints, most notably Athanasius of Alexandria, a 4th-century theologian who defended orthodox doctrine against Arianism. It has remained a common name in Greek Orthodox tradition, particularly in Greece and Cyprus, and experienced a revival in the United States among Greek-American families in the mid-20th century.

Nicknames & variants

Nicknames: Thanos, Sakis, Nasos

Variants: Athanasius, Atanasio, Atanasiu

Sibling names for Athanasios

Names that share Athanasios's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

A is for Athanasios, our favorite little boy.

A is for Athanasios…”

In a Mallowby alphabet book, Athanasios's letter becomes Athanasios's page: hand-illustrated, printed hardcover or paperback, made just for them.

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Questions parents ask

What does the name Athanasios mean?
Athanasios means 'immortal' in Greek, from 'athanatos' (not dying).
How popular is the name Athanasios?
As of 2025, it ranks #4539 in the U.S., with about 1 in every 77,640 boys given the name. Its popularity peaked in 1973.
Is Athanasios a boy's name?
Yes, Athanasios is traditionally a masculine name. The feminine equivalent is Athanasia.