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Sianni

♀ Girl

Pronounced SYAN-nee /ˈsjən.ni/Low

Meaning: Modern variant of Sienna/Sian; no single fixed lexical meaningLow

In 30 seconds: Sianni is a modern American girl's name, generally taken as a blend of Sienna and Sian. It has no single fixed dictionary meaning.

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Origin LowEnglish (American)

MeaningModern variant of Sienna/Sian; no single fixed lexical meaning

U.S. rank (2025)#1629 ↗ Rising

2025 U.S. births128 girls (0.01% of U.S. girls)

Peak year2025

Total births (all-time)≈ 574

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

Sianni is a recent American coinage, and its meaning is genuinely unsettled. It is most often read as a reshaping of Sienna or the Welsh Sian, borrowing their sound rather than a fixed definition. The honest answer is that it is a sound-driven invention, not a name with an inherited lexical meaning.

The double-'n' spelling and the bright '-i' ending give Sianni a contemporary look that fits its modern origin.

Did you know? Sianni is a modern American coined name, generally treated as a variant of Sienna or an elaboration related to Welsh Sian ('God is gracious'), and that contemporary flair is what gives it most of its appeal.

Overall data confidence 55%

Behind the Name - Sianni — etymology, usage, pronunciation, and related formsU.S. Social Security Administration — 2024 popularity rank and count supplied in the batch input CSV

Variations

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Nicknames

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Famous Bearers

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If you like Sianni…

Sienna— One of the names Sianni is commonly seen as a respelling of.

Gianni— Matches Sianni's exact '-ianni' sound and rhythm.

Tianna— Shares the soft, flowing modern sound that defines Sianni.

Sunni— shares the -ni ending

Seoni— echoes that soft -ni sound

Frequently Asked

What does the name Sianni mean?

Sianni is a modern American coined name, generally treated as a variant of Sienna or an elaboration related to Welsh Sian (feminine form of John, 'God is gracious'). It has no single fixed lexical meaning.

How do you pronounce Sianni?

It's commonly said SYAN-nee /ˈsjən.ni/.

Is Sianni a boy or girl name?

In this batch and in recent U.S. usage data, Sianni is used as a girl name.

How popular is Sianni?

In 2024, Sianni ranked #1783 in the U.S. for girls, with 113 births recorded.