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

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.

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