The first name Cai
A unisex name.
1 syllable Unisex Also a surname
Popularity
Babies registered in England and Wales, 1996–2025
In 2025, 52 boys were named Cai, making it the 687th most popular boys’ name. It peaked in 2006, with 192 births (#214).
Office for National Statistics; years with fewer than three births are not published and show as zero. Compare Cai with other names.
Popularity in the United States
Babies named Cai at birth, 1880–2025
In 2025, 69 boys born in the United States were named Cai, the 2,113th most popular boys’ name that year. It was used most in 2022, when 108 were.
US Social Security Administration, from applications for a Social Security card. A name is only published for a year when at least five babies were given it, so quieter years show as zero.
Questions
- How popular is the name Cai?
- In 2025, 52 boys born in England and Wales were named Cai, ranking 687th. Its peak was 2006, with 192 births.
- Is Cai a boy's or a girl's name?
- Both. Of the 1,945 US babies named Cai since 1880, 25% were girls and 75% boys.
- When was Cai most popular?
- 2022 in the United States, when 108 babies were named Cai, its highest rank at 1,612th.
- Is Cai also a surname?
- Yes. Cai is used as a surname as well as a first name; its surname page has the origin and how many people carry it.