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Home › Baby Names Directory › Cassidee

Cassidee

♀ Girl

Pronounced KAS-ih-dee /ˈkæs.ɪ.di/High

Meaning: A modern respelling of Cassidy, from the Irish surname O Caiside, from cas, 'curly' — hence 'curly-haired.' The -dee ending is an American restyling, which we note.Low

In 30 seconds: A restyled Cassidy, from the Irish surname O Caiside — 'curly-haired' (said 'KAS-ih-dee').
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Origin MediumIrish
MeaningA modern respelling of Cassidy, from the Irish surname O Caiside, from cas, 'curly' — hence 'curly-haired.' The -dee ending is an American restyling, which we note.
U.S. rank (2024)#13770 ↘ Falling
2024 U.S. births6 girls (0.00% of U.S. girls)
Peak year2014
Total births (all-time)≈ 777

Popularity in the U.S. · SSA data

peak 201419812024

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

Cassidee is an American respelling of Cassidy, from the Irish surname O Caiside — 'descendant of Caiside,' from cas, 'curly.' Cassidy turned to girls' use in the U.S. in the 1980s, and this -dee spelling followed the fashion. Bouncy and bright (said 'KAS-ih-dee').

It appears rarely in U.S. data, far behind Cassidy. Rare, spirited, and modern.

Did you know? Cassidy came to America as a clan surname and became a girls' first name in the 1980s; spellings like Cassidee are the next chapter of that journey (said 'KAS-ih-dee').
Overall data confidence 45%
References — Cassidee — Cassidy respelling; Irish O Caiside

Variations

CassidyKassideeCassidi

Nicknames

CassDee

Famous Bearers

  • Famous bearers coming soon.

If you like Cassidee…

Cassidy— the standard spelling of the same name
Kassidy— a K- spelling variant
Kennedy— a like Irish surname turned girl's name
Marlee— a like -ee ending modern pick

Explore names like Cassidee

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Frequently Asked

What does the name Cassidee mean?

Cassidee is a spelling of Cassidy, from the Irish surname O Caiside — traditionally 'curly-haired.'

How do you pronounce Cassidee?

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

Is Cassidee a boy or girl name?

Cassidee is used as a girl's name.

How popular is Cassidee?

Cassidee is very rare in the U.S., far behind Cassidy.

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