Keisy

♀ Girl

Pronounced KAY-see /ˈkeɪ.si/Medium

Meaning: Latina spelling of Casey/Keisy — from the Irish surname O'Cathasaigh, 'vigilant, watchful'Medium

In 30 seconds: Vigilant and sweet: Keisy spells Casey — 'vigilant, watchful' — Latina-style. Crisp, friendly, and warm.

💕 Browse more names

Origin MediumIrish, American

MeaningLatina spelling of Casey/Keisy — from the Irish surname O'Cathasaigh, 'vigilant, watchful'

U.S. rank (2025)#4035 ↗ Rising

2025 U.S. births36 girls (0.00% of U.S. girls)

Peak year2022

Total births (all-time)≈ 779

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

Keisy is a Latina spelling of Casey/Keisy — from the Irish surname O'Cathasaigh, 'vigilant, watchful'. A crisp, friendly name across Latin America, rendering the sound in Spanish-flavored spelling (said 'KAY-see').

In the U.S. it appears in Latino families. Rare, vigilant at the root, and friendly.

Did you know? Casey comes from the Irish O'Cathasaigh, 'vigilant, watchful' — Keisy is a Latina phonetic spelling (said 'KAY-see'); crisp and friendly.

Overall data confidence 60%

Behind the Name — Casey — root etymology

Variations

CaseyKayceeKeysi

Nicknames

Kei

Famous Bearers

Famous bearers coming soon.

If you like Keisy…

Casey— the standard spelling

Kaycee— a fellow spelling

Keysi— a Latina spelling

Kourtney— another surname-name pick

Hennessy— another Irish name

Explore names like Keisy

By themesurname-name irish modern-spelling

All themes →All meanings →All origins →

Frequently Asked

What does the name Keisy mean?

Keisy spells Casey — Irish 'vigilant, watchful'.

How do you pronounce Keisy?

It's said KAY-see /ˈkeɪ.si/ — two syllables, stress on the first.

Is Keisy a boy or girl name?

Keisy is a girl's name.

How popular is Keisy?

Keisy is a rare name in the U.S.