Home › Baby Names Directory › Kaysi
👍 Kaysi
♀ Girl
How to Pronounce Kaysi
Pronounced KAY-see
🔊 Hear it /ˈkeɪ.si/ Medium ⧉ copy
Meaning: A modern respelling of Casey/Kasey, from the Irish O Cathasaigh, 'vigilant; watchful.' Bright and breezy. Low ⧉ copy
In 30 seconds: A bright short name: Kaysi respells Casey, 'vigilant; watchful' (said 'KAY-see'). Cheerful and modern.
💕 Browse more names
🍼
Essentials for baby
Baby care from Dr. Talbot’s
Bottles, diapering, bath and nasal care — 23 picks.
Dr. Talbot’s · affiliate link
Shop baby essentials
Meaning A modern respelling of Casey/Kasey, from the Irish O Cathasaigh, 'vigilant; watchful.' Bright and breezy.
U.S. rank (2025) #8103 ↗ Rising
2025 U.S. births 13 girls (0.00% of U.S. girls)
Peak year 1988
Total births (all-time) ≈ 594
🌸
Essentials for mom
What she’ll actually want in week one
Peri-bottle, nursing pads, postpartum ice packs — 29 picks from Dr. Talbot’s.
Dr. Talbot’s · affiliate link
Shop mom essentials Popularity in the U.S. · SSA data peak 1988 1971 2025 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.
Did you know? Kaysi is a modern respelling of Casey/Kasey, from the Irish for 'vigilant; watchful' — a bright, breezy short name that reads clean and current (said 'KAY-see').
Overall data confidence 44%
References — Kaysi — Casey/Kasey respelling; Irish 'vigilant; watchful'
Variations Casey Kasey Kaycee
Nicknames Kay Kaysie
Famous Bearers Famous bearers coming soon. If you like Kaysi… Casey — the Irish name it respells Kasey — a like Casey respelling Macy — a like bright short name Keysi — a similarly popular pick Kassi — lands in the same popularity range 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.
