Cidnei
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Meaning
possibly a form of Sidnei, a Brazilian adaptation of Sidney, a name from an English surname
How popular is Cidnei around the world?
Cidnei has no published row in the national Social Security baby-name files from 1880 through 2025. Those files omit name-and-sex counts below five, so there is no popularity curve to chart and no basis for saying the name was never used.
United States
no published row
Cidnei has no published row in the national Social Security baby-name files from 1880 through 2025. Those files omit name-and-sex counts below five, so there is no popularity curve to chart and no basis for saying the name was never used.
Births with a Social Security record. Source: U.S. Social Security Administration
Not on 16 other recordsWhy
- Not on the record in Spain, Mexico City, Argentina, Puerto Rico, England and Wales, Canada, Ireland, New Zealand, Scotland and Poland: those registries withhold small counts, so rare uses may sit below their floors.
- Not on the Chile record: nametree keeps spellings that reached 5 registrations in some year, so rarer uses are not shown.
- Not on the Montevideo record for 1940 to 2011: that registry withholds nothing, so this spelling was not given there in those years.
- Not on the France record: nametree keeps spellings that reached 20 births in some year, so rarer uses are not shown.
- Not on the South Australia record for 1944 to 2017: that registry withholds nothing, so this spelling was not given there in those years.
- Not on the Austria record for 1984 to 2025: Statistik Austria publishes every first name down to a single birth, so this name was not given there in those years (before 2010 the record covers babies with Austrian citizenship only).
- Not on Norway’s list: Statistics Norway lists only first names carried by 200 or more living people, so rarer names are not shown.
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The Cidnei deep dive
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