Gender
Origin
- English
- Arthurs brother
Alternate Spellings and Variants of Cai
Pronunciation
cai
Popularity in the USA
- Boys: peak in 2022 (rank #1611, 108 births); most recent 2025 (rank #2108, 69 births)
- Girls: peak in 2020 (rank #3777, 38 births); most recent 2025 (rank #8362, 12 births)
| Year | Boys | Girls |
|---|---|---|
| 2025 | 69 | 12 |
| 2024 | 83 | 18 |
| 2023 | 86 | 25 |
| 2022 | 108 | 23 |
| 2021 | 87 | 24 |
| 2020 | 66 | 38 |
| 2019 | 66 | 28 |
| 2018 | 65 | 21 |
| 2017 | 68 | 25 |
| 2016 | 82 | 34 |
Top girl names · Top boy names in the USA (2025)
Source: U.S. Social Security Administration (SSA), national baby names data (public domain). This site is not affiliated with or endorsed by the SSA. Data years: 1880 to 2025. Original data
Popularity in England and Wales
- Boys: peak in 2006 (rank #214, 192 births); most recent 2025 (rank #688, 52 births)
- Girls: peak in 2005 (rank #3377, 5 births); most recent 2006 (rank #5051, 3 births)
| Year | Boys | Girls |
|---|---|---|
| 2025 | 52 | – |
| 2024 | 56 | – |
| 2023 | 44 | – |
| 2022 | 53 | – |
| 2021 | 56 | – |
| 2020 | 64 | – |
| 2019 | 53 | – |
| 2018 | 62 | – |
| 2017 | 74 | – |
| 2016 | 79 | – |
Top girl names · Top boy names in England and Wales (2025)
Source: Office for National Statistics (ONS), Baby names in England and Wales. Contains public sector information licensed under the Open Government Licence v3.0. Data years: 1996 to 2025. Original data · Licence
Popularity in Ireland
- Boys: peak in 2023 (rank #626, 4 births)
| Year | Boys |
|---|---|
| 2025 | – |
| 2024 | – |
| 2023 | 4 |
| 2022 | 3 |
| 2021 | 3 |
| 2020 | – |
| 2019 | – |
| 2018 | – |
| 2017 | – |
| 2016 | – |
Top girl names · Top boy names in Ireland (2025)
Source: Central Statistics Office (CSO), Ireland, Irish Babies' Names (tables VSA50 and VSA60), licensed under CC BY 4.0. Changes: spellings that differ only by accents (for example Rian and Rían) are counted together. Data years: 1964 to 2025. Original data · Licence
Popularity in Scotland
- Boys: peak in 2021 (rank #477, 6 births); most recent 2025 (rank #762, 3 births)
| Year | Boys |
|---|---|
| 2025 | 3 |
| 2024 | – |
| 2023 | – |
| 2022 | 4 |
| 2021 | 6 |
| 2020 | 4 |
| 2019 | 3 |
| 2018 | 3 |
| 2017 | 5 |
| 2016 | 3 |
Top girl names · Top boy names in Scotland (2025)
Source: National Records of Scotland (NRS), Babies' First Names. © Crown copyright. Contains public sector information licensed under the Open Government Licence v3.0. Data years: 1974 to 2025. Original data · Licence
Popularity in Northern Ireland
- Boys: peak in 2023 (rank #272, 6 births)
| Year | Boys |
|---|---|
| 2025 | – |
| 2024 | – |
| 2023 | 6 |
| 2022 | – |
| 2021 | – |
| 2020 | – |
| 2019 | – |
| 2018 | – |
| 2017 | – |
| 2016 | – |
Top girl names · Top boy names in Northern Ireland (2025)
Source: Northern Ireland Statistics and Research Agency (NISRA), Baby Names. © Crown copyright. Contains public sector information licensed under the Open Government Licence v3.0. Data years: 1997 to 2025. Original data · Licence