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Home › Baby Names Directory › Kassidy

Kassidy

♂ Boy

Pronounced KASS-ih-dee /ˈkæs.ɪ.di/High

Meaning: A spelling of Cassidy, from the Irish surname O Caiside, 'descendant of Caiside' (a byname linked to 'curly-haired'). Once given to boys, it now leans strongly to girls in the U.S., which we note.Low

In 30 seconds: An Irish surname name: Kassidy means 'descendant of Caiside' (said 'KASS-ih-dee'). More often a girl's name now, which we note.
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Origin MediumIrish
MeaningA spelling of Cassidy, from the Irish surname O Caiside, 'descendant of Caiside' (a byname linked to 'curly-haired'). Once given to boys, it now leans strongly to girls in the U.S., which we note.
U.S. rank (2025)#10193 ↗ Rising
2025 U.S. births7 boys (0.00% of U.S. boys)
Peak year2017
Total births (all-time)≈ 433

Popularity in the U.S. · SSA data

peak 201719822025

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

Kassidy is a spelling of Cassidy, from the Irish surname O Caiside, 'descendant of Caiside', a byname linked to 'curly-haired'. It began as a boys' and surname name but now leans strongly to girls in the U.S., which we note. A bright three-beat pick (said 'KASS-ih-dee').

For boys it appears only rarely in the U.S., against far heavier girls' use. Rare for boys, surname-style, and Irish-rooted.

Did you know? Kassidy is a spelling of Cassidy, from the Irish O Caiside, 'descendant of Caiside', tied to 'curly-haired'; once a boys' name, it now leans strongly girl, which we note (said 'KASS-ih-dee').
Overall data confidence 50%
References - Kassidy — Irish O Caiside; cross-sex, girl-leaning now

Variations

CassidyCassideyKassidey

Nicknames

KassCass

Famous Bearers

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If you like Kassidy…

Cassidy— the standard spelling Kassidy shares
Cassius— a like Cass- pick
Kellan— a like Irish surname-style name
Donovan— a like Irish surname choice

Explore names like Kassidy

By themeirishsurnamecross-sexunisex-lean-girl

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Frequently Asked

What does the name Kassidy mean?

Kassidy is a spelling of Cassidy, from the Irish O Caiside, 'descendant of Caiside', linked to 'curly-haired'.

How do you pronounce Kassidy?

It's said KASS-ih-dee /ˈkæs.ɪ.di/ - three syllables, stress on the first.

Is Kassidy a boy or girl name?

Kassidy is used here as a boy's name; note it now leans strongly to girls in the U.S.

How popular is Kassidy?

Kassidy is rare for boys in the U.S. and more common for girls.

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