A LITTLE UNCOMMON. ENTIRELY YOURS.
Meaning, origin and pronunciation, with published usage by place and year.
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Uncertain; proposed Gustav roots include support of the Geats or a Slavic guest/honour formation.
Gustavo is linked to Gustav by the exact Spanish and Portuguese entries. University of Copenhagen and Isof explain competing Nordic and Slavic interpretations. Royal use does not establish royal staff as the literal meaning. Original factual summary by Rare Baby Names.
Spanish and Portuguese forms of Gustav; deeper origin disputed
The exact Spanish and Portuguese given-name sections identify the Gustav equivalent; Portuguese explicitly records Swedish ancestry. Nordic and Slavic explanations of Gustav remain alternatives, not a settled universal root.
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 | 5 · preliminary | 3153 | 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 Unpublished values are unknown, not zero.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 | 25 (rounded to 5) | 1282 | 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| England & Wales | 2025 | Boys | 5 | 3684 | Source-reported counts; unpublished names are not zero. Rank basis: source published. |
| Ireland | 2012 | Boys | 4 | 616 | Names below three occurrences are unpublished.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| United States | 2000 | Girls | 5 | 15031 | Source-reported counts; unpublished names are not zero. Rank basis: calculated from published counts. |
| United States | 2025 | Boys | 447 | 625 | 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 language section records Gustavo as a masculine given name equivalent to Gustav. Credit: Wiktionary contributors. Adapted and condensed by Rare Baby Names.
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 language section records Gustavo as a masculine given name equivalent to Gustav. Credit: Wiktionary contributors. Adapted and condensed by Rare Baby Names.
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
Gustavo is linked to Gustav by the exact Spanish and Portuguese entries. University of Copenhagen and Isof explain competing Nordic and Slavic interpretations. Royal use does not establish royal staff as the literal meaning. Original factual summary by Rare Baby Names. Credit: University of Copenhagen, Department of Nordic Studies and Linguistics; Eva Brylla, Förnamn i Sverige, via Institutet för språk och folkminnen (Isof). No passages or images reproduced; no open-data licence asserted.
Original factual summary; no open-data licence asserted
Checked against cited source
The exact Spanish and Portuguese given-name sections identify the Gustav equivalent; Portuguese explicitly records Swedish ancestry. Nordic and Slavic explanations of Gustav remain alternatives, not a settled universal root. Credit: Wiktionary contributors. Adapted and condensed by Rare Baby Names.
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
Explicit equivalent in the Spanish and Portuguese given-name entries; each spelling retains separate popularity records. Credit: Wiktionary contributors. Adapted and condensed by Rare Baby Names.
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
Isof explicitly describes Gustav’s origin and meaning as disputed, with both Nordic and Slavic proposals. Credit: Eva Brylla, Förnamn i Sverige, via Institutet för språk och folkminnen. Original factual summary; no text or images reproduced.
Original factual summary; no open-data licence asserted
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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.
