Girl · #14,962 in 2026

Sidnei

Name: Popularity of the name Sidnei in U.S. births, 1880–2026
Creator: U.S. Social Security Administration
License: https://www.ssa.gov/foia/
Keywords: Sidnei, baby name, popularity, U.S., SSA, rankings

Sidnei is a masculine given name of Portuguese origin. People with that name include:Sidnei Sidnei da Silva, Brazilian footballer Sidnei, full name Sidnei Siqueira Lourenço, Brazilian football left-back Sidnei Sciola, Brazilian footballer Sidnei, Sidnei Rechel da Silva Júnior, Brazilian football centre-back

Portuguese

Current Rank

#14,962

Peak Rank

#13,603 (2006)

Total Babies

5-Yr Trend

Stable

1995

First Year

2012

Last Year

2006

Peak Year

#13603

Peak Rank

Total Count

Years Active

Meaning & Origin of Sidnei

What this name means, where it came from, and how it has traveled across cultures.

Source: Wikipedia (CC BY-SA 3.0). Read more →

Cultural Origins (via Behind the Name)

Portuguese

The Story of Sidnei

Sidnei first appeared in U.S. Social Security Administration records as a baby girl name in 1995, with 5 babies given the name that year. Its peak popularity came in 2006, when 7 Sidneis were born — ranking #13,603 that year. As of 2026, Sidnei ranks #14,962 for baby girls with 6 births, with steady use. In total, more than 24 Sidneis have been born in the U.S. since records began in 1880, spanning the 1990s through the 2020s.

Popularity Over Time

Popularity by State

Top 10

11-50

51-100

101-500

500+

No data

Where is Sidnei most common?

Predicted country distribution based on naming patterns globally.

Brazil
96%
United States
1%
Portugal
1%
Japan
1%
CV
0%

Source: Nationalize.io . Probabilities are global naming-pattern estimates, not strict counts.

Names that sound like Sidnei

Phonetically similar names — useful when Sidnei is the vibe but a different syllable count or letter feel might suit better. Linked entries have a profile on Peek a Name.

Sydney
Sidney
Sedna
Cdna
Sinay
Sideway
Cinna
Sidhu
Sidy
Sydow
Cydia
Sidi

Source: Datamuse . Phonetic similarity ranking, not curated.

Frequently Asked Questions about Sidnei

What does the name Sidnei mean?

What is the origin of the name Sidnei?

Sidnei has roots in the following cultural and linguistic traditions: Portuguese.

How popular is Sidnei in 2026?

In 2026, Sidnei ranks #14,962 among girls' names in the U.S., with 6 babies given the name that year.

When was Sidnei most popular?

Sidnei reached its peak popularity in 2006, ranking #13,603 that year with 7 babies given the name.

Is Sidnei a unisex name?

In U.S. Social Security records, Sidnei is primarily a girl's name. We don't have meaningful data for it as a boy's name.

What names go well with Sidnei?

Names that share a similar style or popularity range with Sidnei include Gwendolynne, Dalea, Tarya. These pairings are based on rank proximity and naming era in U.S. data.

About the name Sidnei

Sidnei is a girl baby name tracked by the U.S. Social Security Administration. It first appeared in SSA records in 1995 and has accumulated 24 births in the dataset. Sidnei's peak popularity came in 2006 when it ranked #13,603. Use the chart and map above to compare Sidnei's trajectory across years and U.S. states, or browse the related names section to discover similar choices.

Continue exploring

Data sources

Birth statistics (counts, ranks, years 1880–2026) — U.S. Social Security Administration . Predictions for years not yet released by SSA are computed by Peek a Name from historical trends; we update with official data as soon as it ships.
Etymology, cultural origins, and related forms — Behind the Name (used under their public API terms).
Meaning prose and editorial summary — Wikipedia article extracts, licensed under CC BY-SA 3.0 .
Predicted nationality distribution — Nationalize.io .
Phonetically similar names — Datamuse .

Peek a Name aggregates and presents the above data for informational purposes. Statistical predictions and external attributions are clearly labelled where shown; we make no guarantee of accuracy beyond what each source provides.