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Alexius

♀ Girl

Pronounced uh-LEK-see-us /əˈlɛk.si.əs/Medium

Meaning: Alexius takes Alexis and stretches it to a fuller, Latin-looking ending; both trace to Greek alexein, 'to defend, ward off,' the root behind Alexander and Alexandra. For girls in the 1990s it read as a dressed-up Alexis.Medium

In 30 seconds: Alexius is Alexis lengthened to four beats (said 'uh-LEK-see-us') — the same 'defender' root with an ornate finish.

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Origin MediumGreek

MeaningAlexius takes Alexis and stretches it to a fuller, Latin-looking ending; both trace to Greek alexein, 'to defend, ward off,' the root behind Alexander and Alexandra. For girls in the 1990s it read as a dressed-up Alexis.

U.S. rank (2017)#11671 ↗ Rising

2017 U.S. births8 girls (0.00% of U.S. girls)

Peak year1998

Total births (all-time)≈ 1,515

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

The name grows out of the Greek family of Alexander and Alexis, all sharing alexein, 'to defend.' Alexius is historically a masculine Byzantine name, but American parents in the 1990s used it for girls as a fuller cousin of the wildly popular Alexis. It reached its high point in 1998.

A girl given Alexius at its peak is now in her mid-twenties. The name reads as a very-'90s elaboration rather than a revival; parents who like the sound today usually settle on Alexis, Alexa, or Alexandra.

Did you know? Alexis was a chart-topping girls' name through the 1990s; Alexius is one of the elaborations parents built from it, and it peaked in 1998 near the height of that trend.

Overall data confidence 60%

References — Alexius — Elaboration of Alexis (Gk alexein, 'to defend'); late-1990s peak

Variations

AlexisAlexusAlexius

Nicknames

AlexLexiLex

Famous Bearers

Famous bearers coming soon.

If you like Alexius…

Alexa— a like short Alex- name for girls

Alexia— shares the -ia/-ius flourish and defender root

Alexandra— the full classic behind the whole Alex- family

Alexus— a fellow Greek choice

Arius— echoes that soft -us sound

Explore names like Alexius

By themegreek 1990s elaborated

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Frequently Asked

What does the name Alexius mean?

Alexius is an elaborated form of Alexis, from the Greek for 'defender, helper.'

How do you pronounce Alexius?

It's said uh-LEK-see-us /əˈlɛk.si.əs/ — four syllables, stress on the second.

Is Alexius a boy or girl name?

Here Alexius is used as a girl's name, a variant of Alexis; historically it was a male name.

How popular is Alexius?

Alexius was an uncommon nineties elaboration of the very popular Alexis, and it has stayed rare.