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Casie
Pronounced KAY-see /ˈkeɪ.si/High
Meaning: A spelling of Casey, from the Irish surname O Cathasaigh, 'vigilant; watchful,' and sometimes a short form of Cassandra or Acacia. A bright, breezy name.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
Casie spells Casey, from the Irish surname O Cathasaigh, 'vigilant; watchful,' also read as short for Cassandra/Acacia. It reads bright and friendly - rare in the U.S. in this spelling (said 'KAY-see').
It appears rarely, next to the more common Casey. Rare, breezy, and bright.
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Frequently Asked
What does the name Casie mean?
Casie is a spelling of Casey, from Irish 'vigilant; watchful,' also short for Cassandra or Acacia.
How do you pronounce Casie?
It's said KAY-see /ˈkeɪ.si/ - two syllables, stress on the first.
Is Casie a boy or girl name?
Casie is used here as a girl's name; Casey is used for both.
How popular is Casie?
Casie is a rare name in the U.S.