Kay
A girls’ name of Greek origin, meaning rejoice or pure; form of Katherine or Katrina.
Babies a year
59
the US, 2017
Rarity
Very rare
among names in use
US popularity
—
outside the top 1000
UK popularity
#5927
3 babies
In 2025, 3 babies in England and Wales were named Kay. In the US, 59 were, though that figure is from 2017 — the most recent full year we hold. Its US peak was 3,623 in 1942.
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