Sinead

given name · Latin script

Recorded as a female name· opposite-gender records fall within measured source noise

Sinead is a given name written in the Latin script, with more bearers in Ireland than in any other country, where it is the 91st most common given name. Recorded meaning: Irish form of Jane; a feminine form of John; very popular in recent years.

rarermore common
  • IEIreland≈1 in 993(inferred from the name graph)
  • AUAustralia≈1 in 13K
  • GBUnited Kingdom≈1 in 14K

carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). One hue, darker where it is more common; hover a country for its figure.

Ireland (inferred from the name graph)

≈5,200 people, est.

Sources
257 (measured from records)

Highest-authority source

≈1 in 993 (inferred from the name graph)

Ireland, est.

measured from records inferred from the name graph

Name dossier (print, CSV)

Meaning & origin(measured from records)

Irish form of Jane; a feminine form of John; very popular in recent years.

Sources 1

  • Irish first names

Attested in 1 language in the etymology graph.

Where in the world(measured from records)

Sinead counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.

Sorted by bearers: national registers' counts, and Mondonomo's estimates (≈, est.) where no register counts.

Where Sinead is recorded, by country
CountryMost common spellingSources
IE Ireland#91≈5,200 est.≈1 in 99329Sinead159
GB United Kingdom#865≈4,800 est.≈1 in 14K9Sinead215
AU Australia—≈1,900 est.≈1 in 13K3Sinead149
US United States—1,5121 in 220K1.5KSinead257
JP Japan—≈530 est.≈1 in 237K—Sinead11
AE United Arab Emirates—≈140 est.≈1 in 72K—Sinead29
NZ New Zealand—≈120 est.≈1 in 42K11Sinead60

Exact figures are national registers' own counts, while figures marked ≈ and est. are Mondonomo’s estimates, counted from our sources and calibrated against those registers; hover one for how far to trust it in that country. A dash means neither exists.

Registers cited: NRS — Baby names Scotland full list (1974–present); Census Bureau — First Name Frequency 2020 by sex; CSO — Irish Babies Names (1998–present); Australian national given names (aggregated state BDM); DIA — Baby name popularity (1900–present). Figures without a register are Mondonomo estimates; see Methodology.

Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).

Other names spelled this way(inferred from the name graph)

Sinead is also recorded as 5 other names, grouped separately because the records behind them do not connect to the one described above.

  • a separate name4 spellings in the group

    Also written Sínead, Sinéad, Sineád

  • Danish given name7 spellings in the group

    Most recorded in Ireland, United Kingdom, United States, Denmark

    Languages: Danish, Norwegian, Swedish

    Also written Sinéad

  • Croatian given name9 spellings in the group

    Most recorded in United Kingdom, United States, Ireland, Croatia

    Also written Sinéad, Sineád

  • Russian given name7 spellings in the group

    Most recorded in United Kingdom, Ireland, United States, Russia

    Languages: Russian, Belarusian, Ukrainian

    Also written Sinéad, Шинейд, Шинеид

  • Hungarian given name2 spellings in the group

    Most recorded in Hungary, Ireland, United Kingdom, United States

    Also written Sinéad

39 further groups record this spelling and are not listed here.

Grouping is the name graph's, not a register's: two spellings join a group when the evidence links them, so a group is a claim about the records rather than about the people.

Other recorded senses(measured from records)

Sinead is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.

  • The Irish form of Jane, a common feminine of John. It has pecome very popular indeed within recent years. The actress Sinead Cusack is a contemporary example.

    as a nameIrish first names

Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.

Notable people with this name(measured from records)

1970198019902000Sinead Boucher, b. 1970Sinead O'Donnell, b. 1975Sinead Keenan, b. 1977Sinead Diver, b. 1977Sinead Kerr, b. 1978Sinead Kavanagh, b. 1986Sinead Chambers, b. 1992Sinead Jack-Kısal, b. 1993

The ten people covered by the most Wikipedia language editions — a proxy for cross-cultural notability, which favours historical and Western figures over equally prominent contemporary ones — shown by birth year. Source: Wikidata (CC0).

Evidence(measured from records)

Attested in 40 sources across 24 countries.

Reference works 3

  • Dictionary of American Family Names
  • Wikipedia given-name tokens
  • Wikidata name items (native-script + romanized given/family names)

These works list the name; their figures are licensed and are not reproduced here.

Register rows as of the 2026-10-09 data build.

Frequently asked questions

What does the name Sinead mean, and where does it come from?
Irish form of Jane; a feminine form of John; very popular in recent years. Recorded by Irish first names.
Is Sinead a male or female name?
Sinead is a female name in our records. Opposite-gender entries fall within the cross-gender noise we measure in the source data, so we don't report them as usage.
In which country does Sinead have the most bearers?
Mondonomo estimates about 5.2 thousand people named Sinead in Ireland, more than in any other country we hold, where it is most often spelled sinead.
How common is the name Sinead?
In the United States, the national register counted 1,512 people named Sinead in 2020, about 1 in 220 thousand residents.
How common is Sinead compared with other names?
In Ireland, Sinead is the 91st most common given name of 14,976 given names recorded there.

What do you want to know about Sinead?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/sinead

The same payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), and bulk access is licensed separately.

About this data

measured from records inferred from the name graph machine-generated

These figures come from the data snapshot of and will change as it is rebuilt.

Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.

Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.

Cite this page Mondonomo, “Sinead” — the 91st most common given name in Ireland. Data snapshot 2026-10-10.

See how Sinead parses inside a full name →