Girl’s name · American English, Welsh

Sianni

How to say it: see-AH-nee · /siˈɑːniː/

Modern American variant inspired by Siani or Sienna - invented spelling with melodic contemporary feel.

Sianni was the 1,279th most popular girls’ name in the United States in 2025, given to 128 babies (Social Security Administration). The 2020s are its busiest decade so far, its births are up 27-fold in ten years, and it is projected to rise to #430 by 2030.

Updated · SSA 2025 data, published May 2026 · How we compute these figures

#1,279for girls in 2025
1 in 25,901US babies
128born in 2025
#430projected for 2030
2020sits peak decade
under 1 in 200chance a classmate shares it

Key facts

Key facts about Sianni
Rank among girls’ names, 2025#1,279
Babies born in 2025128
Share of births1 in 25,901
Peak decade2020s
Change over 10 years×27
Projected rank for 2030 (estimate)#430

Sources: Social Security Administration (SSA). How we compute these figures.

Its life, decade by decade

Almost all use of Sianni has come in the last forty years. It stands at its high in the 2020s, with further gains expected soon.

1900195020002020–25
Peak: 34 per million births, 2020s.

What goes with it

Melodic across three syllables, soft and breathy with a creative and gentle spirit. Miana and Journii feel close in style.

Parents who love Sianni also love

Nicknames

  • Sia
  • Anni

Honouring a Sianni in the family

In the classroom

In a class of 25 children born in 2025, the chance that another child is called Sianni is about under 1 in 200.

Around the world

This spelling is used in English, Welsh.

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