Cai
A boys’ name of Welsh origin, meaning rejoice or celebrate.
Babies a year
52
England and Wales, 2025
Rarity
Rare
among names in use
US popularity
—
outside the top 1000
UK popularity
#687
52 babies · down from #664
Cai by the numbers
In 2025, 52 babies in England and Wales were named Cai. In the US, 92 were, though that figure is from 2017, the most recent full year we hold.
For the size of the two countries, it is given several times more often in England and Wales than in the US.
Its American peak was 82 babies in 2015, making it a 2010s name.
Spelled almost the same
Other names in the records within a letter or two of Cai. Close spellings are not always related names, but they are usually worth seeing together.
- Cainacquired possession262 in the US (2017)
- Calbald; a form of Caleb or Calvin157 in the US (2017)
- Camcrooked; from Scottish cam or diminutive of Cameron107 in the US (2017)
- Caiorejoice; from Gaius36 in England and Wales (2025)
- Cansoul or spirit6 in England and Wales (2025)
- Chithe greek letter chi22 in the US (2017)
Sounds like Cai
Names that are said the same way as Cai, however they are written. Sounding alike does not mean they share a history.
Other names that mean joy
Like Cai, each of these has joy in its meaning. Different names, different histories, the same idea.
- Asherhappy, blessed6,076 in the US (2017)
- Edendelight, paradise594 in England and Wales (2025)
- Felixhappy; fortunate811 in England and Wales (2025)
- Tatumcheerful or bringer of joy1,159 in the US (2017)
- Joyjoy; gladness and pleasure971 in the US (2017)
- Winstonwine town; joy stone; place name785 in the US (2017)