Cydni
Feminine · “A spelling of Sydney”
Cydni is Sydney with a C at the front and an i at the end, a spelling that makes the name look new. The name also belongs to Sidney Poitier, the actor who opened doors in Hollywood.
How old is the name Cydni?
Cydni first appears in US birth records in 1960 — 65 years ago. The typical Cydni alive today was born around 1998, making them about 27 years old. About 600 people named Cydni are estimated to be alive in the US today.
When was the name Cydni most popular?
Cydni peaked in 1996, reaching #3149 nationally. See the whole 1996 chart.
Lists built from the same records:
Where it comes from
From Sidney to Cydni
The story of Cydni
Cydni swaps the S of Sydney for a C that says the same thing, as in city and cycle, and writes the ending with a plain i. Sidney Poitier was born early in Miami while his parents, tomato farmers from the Bahamas, were there to sell their crop, which made him an American citizen; he grew up in the Bahamas and became the first Black actor to win the Academy Award for best actor. Cydni is one of the spellings American families have used.
Meaning
A spelling of Sydney, an English surname
Sydney is an English surname, often traced to Saint-Denis in France. Cydni changes the first and last letters.
How the name formed
- Sidney
- Sydney
- Cydni
Related forms: Sydney · Sidney
Pronouncing Cydni
SID-nee
Two syllables with the stress on the first.
Nicknames for Cydni
Limited
What the data says
146 years of official birth records
The long climb, and where it stands now
The same years in position rather than babies
- First recorded
- 1960
- Most girls named
- 199637 — the highest on record
- Peak rank
- #3149reached in 1996
- Change vs 2020
- +60.0%8 in 2021, from 5
Rank is a position, a count is a headcount, and they move independently — a name can hold its rank while the number of babies behind it falls. Source: U.S. Social Security Administration.
Cydni in other languages
The same name elsewhere
- Sydney in English — spelling variant
- Sidney in English — spelling variant
Cydnis among us
people named Cydni are estimated to be alive in the US today
Estimated from SSA birth records and published actuarial life tables. Method
Is it right for you
Questions parents actually ask
Fashion outlook
Cydni sits outside the current charts, and that is its own kind of answer: naming cycles can only date the names they carried up. A name this rare has no decade stamped on it — it cannot go out of fashion, because it was never in.
Based on 146 years of naming cycles. How we read them
The trade-off
- Sounds like Sydney, a name everyone knows.
- Comes with Syd as a ready short form.
- Distinct on paper.
- Almost everyone will write Sydney.
- The C may be read as a slip.
- It sounds like a popular name of its generation.
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Cydni
Feminine
Frequently asked
- How many Cydnis are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 600 people named Cydni are estimated to be alive in the US today.
- How popular is the name Cydni in 2025?
- Cydni is rarely given in the US today — it does not rank in the top 2000 girl names.
- Will my child share the name Cydni with classmates?
- Cydni will almost certainly be the only one in school.
More C names
The most-given names starting with C, all years combined.
Carol#2239 · Cynthia#1013 · Catherine#313 · Christine#1272 · Carolyn#1222 · Christina#770 · Charlotte#2 · Cheryl#4352
Looking for what else is popular rather than what resembles Cydni? See the current top 100.
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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