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Kaysi
Pronounced KAY-see /ˈkeɪ.si/Medium
Meaning: A modern respelling of Casey/Kasey, from the Irish O Cathasaigh, 'vigilant; watchful.' Bright and breezy.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
Kaysi respells Casey/Kasey, from the Irish O Cathasaigh, 'vigilant; watchful.' It reads bright and modern, a fresh take on a familiar name — rare in the U.S. (said 'KAY-see').
It appears only rarely, next to the more common Casey and Kasey. Rare, bright, and breezy.
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Frequently Asked
What does the name Kaysi mean?
Kaysi respells Casey/Kasey, from the Irish for 'vigilant; watchful.'
How do you pronounce Kaysi?
It's said KAY-see /ˈkeɪ.si/ — two syllables, stress on the first.
Is Kaysi a boy or girl name?
Kaysi is used here as a girl's name; Casey is unisex.
How popular is Kaysi?
Kaysi is a rare name in the U.S.