A LITTLE UNCOMMON. ENTIRELY YOURS.
Meaning, origin and pronunciation, with published usage by place and year.
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A Hebrew heel-related root, through the James/Jacob name family; the interpretation varies.
Thiago is a Portuguese spelling of Tiago. Tiago arose by reinterpreting Santiago as São Tiago rather than Santo Iago. The documented James/Jacob family has a Hebrew heel-related formation with several interpretations; a universal supplanter gloss is not asserted.
Portuguese spelling of Tiago, through Santiago and the Hebrew-rooted James/Jacob family.
The th was added as a spelling variation rather than inherited from the older root. The parent name Tiago reflects reanalysis of the saint-name Santiago.
Not yet published for this spelling.
Counts apply only to the exact spelling, place, year and recorded usage shown. Places are separate; these figures are never added into a worldwide total. Missing or suppressed records never mean zero.
| Place | Year | Recorded usage | Published births | Rank | Notes |
|---|---|---|---|---|---|
| Canada | 2025 | Boys | 100 · preliminary | 331 | 2025 figures are preliminary. Quebec counts below five are randomly imputed by the publisher before national aggregation. Accents are removed in the source; this profile was matched only where the catalog spelling was unambiguous. Unpublished values are unknown, not zero. Rank basis: source published. |
| France | 2025 | Boys | 260 (rounded to 5) | 204 | Counts are rounded to the nearest multiple of five. Ranks use unrounded publisher counts with randomly ordered ties; equally rounded counts can have different ranks. National coverage excludes Mayotte before 2012. Missing years are unavailable, not zero. Automated direction labels are withheld for this rounded-count series. Rank basis: source published. |
| England & Wales | 2025 | Boys | 128 | 331 | Source-reported counts; unpublished names are not zero. Rank basis: source published. |
| Scotland | 2022 | Boys | 5 | 522 | Source-reported counts; unpublished names are not zero. Rank basis: source published. |
| Ireland | 2025 | Boys | 5 | 577 | Names below three occurrences are unpublished. Accent recording changed in 2018; comparisons across that boundary may not describe the same spelling coverage. Counts refer to registrations in the year. Missing years are unavailable, not zero. Rank basis: source published. |
| United States | 2025 | Girls | 5 | 14942 | Source-reported counts; unpublished names are not zero. Rank basis: calculated from published counts. |
| United States | 2025 | Boys | 5,835 | 50 | Source-reported counts; unpublished names are not zero. Rank basis: calculated from published counts. |
Canada, Ireland and France coverage includes confidently matched existing profiles only; unmatched spellings are awaiting review. French counts are rounded to five.
Open an entry for its source, credit, licence and full qualifications. Different name traditions remain separate.
Checked against cited source
The exact Portuguese entries explicitly document male personal-name use and the spelling relationship. Credit: Wiktionary contributors, exact Thiago, Tiago entries. Sources: https://en.wiktionary.org/w/index.php?title=Thiago&oldid=82551925; https://en.wiktionary.org/w/index.php?title=Tiago&oldid=87681994. License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/). Adaptation: Rare Baby Names summarized the documented name route or language-specific relationship. No source audio, images or quotations reused.
Credit: Wiktionary contributors. Adapted by Rare Baby Names: wording shortened and name contexts separated. Recorded pronunciations are shown as published.
This adapted text is available under CC BY-SA 4.0.
CC BY-SA 4.0
Checked against cited source
Thiago is a Portuguese spelling of Tiago. Tiago arose by reinterpreting Santiago as São Tiago rather than Santo Iago. The documented James/Jacob family has a Hebrew heel-related formation with several interpretations; a universal supplanter gloss is not asserted. Credit: Wiktionary contributors, exact Thiago, Tiago, James entries. Sources: https://en.wiktionary.org/w/index.php?title=Thiago&oldid=82551925; https://en.wiktionary.org/w/index.php?title=Tiago&oldid=87681994; https://en.wiktionary.org/w/index.php?title=James&oldid=93542483. License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/). Adaptation: Rare Baby Names summarized the documented name route or language-specific relationship. No source audio, images or quotations reused.
Credit: Wiktionary contributors. Adapted by Rare Baby Names: wording shortened and name contexts separated. Recorded pronunciations are shown as published.
This adapted text is available under CC BY-SA 4.0.
CC BY-SA 4.0
Checked against cited source
The th was added as a spelling variation rather than inherited from the older root. The parent name Tiago reflects reanalysis of the saint-name Santiago. Credit: Wiktionary contributors, exact Thiago, Tiago, James entries. Sources: https://en.wiktionary.org/w/index.php?title=Thiago&oldid=82551925; https://en.wiktionary.org/w/index.php?title=Tiago&oldid=87681994; https://en.wiktionary.org/w/index.php?title=James&oldid=93542483. License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/). Adaptation: Rare Baby Names summarized the documented name route or language-specific relationship. No source audio, images or quotations reused.
Credit: Wiktionary contributors. Adapted by Rare Baby Names: wording shortened and name contexts separated. Recorded pronunciations are shown as published.
This adapted text is available under CC BY-SA 4.0.
CC BY-SA 4.0
Checked against cited source
The exact Portuguese entry explicitly identifies the English equivalent. Pronunciations and popularity series remain separate. Credit: Wiktionary contributors, exact Thiago entries. Sources: https://en.wiktionary.org/w/index.php?title=Thiago&oldid=82551925. License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/). Adaptation: Rare Baby Names summarized the documented name route or language-specific relationship. No source audio, images or quotations reused.
Credit: Wiktionary contributors. Adapted by Rare Baby Names: wording shortened and name contexts separated. Recorded pronunciations are shown as published.
This adapted text is available under CC BY-SA 4.0.
CC BY-SA 4.0
Checked against cited source
Relationship explicitly recorded in the reviewed given-name section; spellings remain separate in popularity statistics.
Credit: Wiktionary contributors. Adapted by Rare Baby Names: wording shortened and name contexts separated. Recorded pronunciations are shown as published.
This adapted text is available under CC BY-SA 4.0.
CC BY-SA 4.0
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Attribution: (C) Crown copyright. Data supplied by National Records of Scotland.
License: Open Government Licence v3.0
Attribution: Source: Office for National Statistics licensed under the Open Government Licence
License: Open Government Licence v3.0
Attribution: U.S. Social Security Administration
Credit: Statistics Canada, Table 17-10-0147-01, 1991–2025, released 23 September 2026.
License: Statistics Canada Open Licence
Adaptation: Adapted from Statistics Canada, First names at birth by sex at birth, selected indicators, Table 17-10-0147-01, reference years 1991–2025. This does not constitute an endorsement by Statistics Canada of this product.
Credit: Central Statistics Office, Ireland, VSA50 and VSA60, updated 27 February 2026.
License: CC BY 4.0
Adaptation: Adapted by Rare Baby Names: joined the published count and rank indicators and matched unambiguous existing spellings. Source values retained.
Credit: Source : Insee, Fichier des prénoms, updated 16 July 2026.
License: Open Licence 2.0 (Etalab)
Adaptation: Adapted by Rare Baby Names: column names and sex codes mapped and unique case-only spellings matched to existing profiles. Published rounded counts and ranks retained.
