Sea in the Hawaiian account; other name routes differ.
The exact English entry records a Hawaiian kai, sea, explanation in US use. European short-form traditions are separate and do not inherit this gloss. The licensed Scottish Fire account is not corroborated or selected here.
Origin
European short-form and Hawaiian accounts; earlier European history uncertain.
The source discusses Danish Kaj, a possible Roman relationship, German/West Frisian pet-form accounts and a Hawaiian word-name explanation. Possibilities remain qualified; no one route is assigned to every Kai.
English pronunciation
/kaɪ/
Directly recorded English pronunciation of the exact given-name spelling. The IPA is labelled Canadian English. The entry documents given-name use with several possible cultural histories; this reading does not select a universal origin. The plain-text guide is approximate; a bearer’s preferred reading can differ. No audio reused.
Recorded English reading, as published. Accents and preferred pronunciations can differ.
Published name usage
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.
Latest published record available for this spelling in each place and recorded usage
Place
Year
Recorded usage
Published births
Rank
Notes
Canada
2025
Girls
25 · preliminary
1065
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 Unpublished values are unknown, not zero.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.
Canada
2025
Boys
439 · preliminary
60
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 Unpublished values are unknown, not zero.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
2007
Girls
5 (rounded to 5)
5497
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.
France
2025
Boys
35 (rounded to 5)
1050
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
Girls
4
4867
Published ranks differ from ranks calculated over visible rows. Counts retained; automated trend labels withheld. Rank basis: source published.
England & Wales
2025
Boys
672
78
Source-reported counts; unpublished names are not zero. Rank basis: source published.
Northern Ireland
2025
Boys
43
44
Source-reported counts; unpublished names are not zero. Rank basis: source published.
Scotland
2007
Girls
3
744
Source-reported counts; unpublished names are not zero. Rank basis: source published.
Scotland
2025
Boys
101
40
Source-reported counts; unpublished names are not zero. Rank basis: source published.
Ireland
2025
Boys
140
34
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
234
1053
Source-reported counts; unpublished names are not zero. Rank basis: calculated from published counts.
United States
2025
Boys
3,768
93
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.
Sources & notes
Open an entry for its source, credit, licence and full qualifications. Different name traditions remain separate.
Language of use: English
Checked against cited source
The exact English entry explicitly documents given-name use; this is distinct from linguistic origin, nationality and ancestry. 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
Meaning: Sea in the Hawaiian account; other name routes differ.
Checked against cited source
The exact English entry records a Hawaiian kai, sea, explanation in US use. European short-form traditions are separate and do not inherit this gloss. The licensed Scottish Fire account is not corroborated or selected here. Credit: Wiktionary contributors; adapted and condensed by Rare Baby Names. No source audio 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
Origin: European short-form and Hawaiian accounts; earlier European history uncertain.
Checked against cited source
The source discusses Danish Kaj, a possible Roman relationship, German/West Frisian pet-form accounts and a Hawaiian word-name explanation. Possibilities remain qualified; no one route is assigned to every Kai. Credit: Wiktionary contributors; adapted and condensed by Rare Baby Names. No source audio 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
English pronunciation: /kaɪ/
Checked against cited source
Directly recorded English pronunciation of the exact given-name spelling. The IPA is labelled Canadian English. The entry documents given-name use with several possible cultural histories; this reading does not select a universal origin. The plain-text guide is approximate; a bearer’s preferred reading can differ. No audio reused. 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
Supporting evidence: Wiktionary: Kai’s distinct name histories
Checked against cited source
The exact English entry distinguishes European name-history proposals and a Hawaiian account. Its possible Roman and West Frisian explanations are not converted into definite nickname links. Existing KYE guide remains unchanged. Credit: Wiktionary contributors; adapted and condensed by Rare Baby Names. No source audio 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
Syllables: 1 (this documented English reading)
Checked against cited source
Count applies to the cited English reading(s) only, not to every language or personal reading. 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.
Statistics Canada, Table 17-10-0147-01, 1991–2025, released 23 September 2026.
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.
Central Statistics Office, Ireland, VSA50 and VSA60, updated 27 February 2026.
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.
Source : Insee, Fichier des prénoms, updated 16 July 2026.
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.