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Jillianna

♀ Girl

Pronounced jil-ee-AN-uh /ˌdʒɪl.iˈæn.ə/High

Meaning: Jillianna elaborates Jillian, an English form of Gillian — itself from Julian, from the Roman family name Julius, often connected with a word meaning 'youthful' or 'downy-bearded'. The -anna ending gives it extra length and lilt.Low

In 30 seconds: A long, lilting form of Jillian: Jillianna reaches back to Julius and Julia, 'youthful' (said 'jil-ee-AN-uh').

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Origin LowEnglish, Latin

MeaningJillianna elaborates Jillian, an English form of Gillian — itself from Julian, from the Roman family name Julius, often connected with a word meaning 'youthful' or 'downy-bearded'. The -anna ending gives it extra length and lilt.

U.S. rank (2024)#14205 ↗ Rising

2024 U.S. births6 girls (0.00% of U.S. girls)

Peak year2010

Total births (all-time)≈ 123

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

Jillianna is a modern elaboration of Jillian, the English form of Gillian, which descends from Julian and the Roman Julius — a family name often connected with a word for 'youthful' or 'downy-bearded'. Adding -anna is a familiar American way of lengthening a name into something more melodic (said 'jil-ee-AN-uh').

It appears only rarely for girls in the U.S., while Jillian is far more familiar. Rare, flowing, and elaborate.

Did you know? Jillian began as Gillian, the English feminine of Julian — and Julian belongs to the great Roman family of Julius. Jillianna simply gives it a longer, more musical tail (said 'jil-ee-AN-uh').

Overall data confidence 50%

References — Jillianna — Jillian/Gillian from Julian; Roman Julius

Variations

JillianGillianJilliana

Nicknames

JillAnnaJilly

Famous Bearers

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If you like Jillianna…

Jillian— the base name Jillianna elaborates

Julianna— a close cousin from the same Julius root

Gillian— the older English form

Arianna— a like flowing -anna name

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Frequently Asked

What does the name Jillianna mean?

Jillianna elaborates Jillian, from Julian and the Roman name Julius — often connected with a word meaning 'youthful'.

How do you pronounce Jillianna?

It's said jil-ee-AN-uh /ˌdʒɪl.iˈæn.ə/ — four syllables, stress on the third.

Is Jillianna a boy or girl name?

Jillianna is used as a girl's name.

How popular is Jillianna?

Jillianna is a rare name for girls in the U.S.; Jillian is more common.