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Kaysey
Pronounced KAY-see /ˈkeɪsiː/Medium
Meaning: Kaysey is an inventive spelling of Casey, a unisex name from the Irish surname O Cathasaigh, based on cathasach, 'vigilant, watchful.' Kaysey shares that Gaelic origin in a more decorative form.Low
Popularity in the U.S. · SSA data
U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.
SSA data updated May 2026. How we source & verify this data.
History & Origin
Kaysey is a creative respelling of Casey, from the Irish surname O Cathasaigh and the word cathasach, 'vigilant or watchful.' Popularized in part by the song 'Kayleigh'-era taste for K-spellings, Kaysey's form is cosmetic, marking it as an individualized version of a familiar name.
It stayed rare, given to only about sixteen girls a year around its high in 1993, while Casey and Kasey were far more common. A woman named Kaysey then is in her early thirties today.
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Frequently Asked
What does the name Kaysey mean?
It is a respelling of Casey, from the Irish surname O Cathasaigh, meaning 'vigilant' or 'watchful.'
How do you pronounce Kaysey?
It is said KAY-see /ˈkeɪsiː/, two syllables stressed at the start.
Is Kaysey a boy or girl name?
Kaysey is used as a girl's name.
How popular is Kaysey?
It was always rare, given to only about sixteen girls a year at its peak in the early nineteen-nineties, even as Casey soared.