Given name
Casi
“vigilant, wakeful”·“a vigilant woman”·“one who is alert; watchful”
Casi is a variant of Casey. Interpretations include “vigilant, wakeful” (Irish), “a vigilant woman” (Irish), and “one who is alert; watchful”. These may reflect different naming traditions.
Meaning & origin
What it means
Casi is a variant of Casey. Interpretations include “vigilant, wakeful” (Irish), “a vigilant woman” (Irish), and “one who is alert; watchful”. These may reflect different naming traditions.
Explained through its name family
Where it comes from
Casi is a variant of Casey. An origin associated with Casey is Irish.
Explained through its name family
The story
Published U.S. birth records include this spelling as early as 1962. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Casi through the years
- Babies since 1880
- 1,080
- 0 boys · 1,080 girls
- Most popular year
- 1989
- 56 babies
- 2025
- 0
- Outside the ranked list
- 2021–25 vs 2016–20
- —
- Too few births to compare
By the numbers
The most recent published U.S. birth count for girls is 5 in 2022. Later missing counts do not mean the name went unused. Its largest published annual count for girls was 56 in 1989. Published U.S. population figures for this spelling include 1,065 as a first name in 2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
The ring: nicknames and forms.
Nicknames & forms 1
Diminutives, pet forms, short forms and variants used alongside the name.
Similar names
If you love Casi, these share its style, era, origin or sound, from outside its own family.
Kaci
“a vigilant man; one who is alert” · “a vigilant woman”
7% boys · 93% girls
Katy
“one who is pure; virginal”
>99% girls
Kassie
“an unheeded prophetess”
>99% girls
Karly
“a small, strong woman”
>99% girls
Karli
“a free man” · “a small, strong woman”
>99% girls
Karissa
“filled with grace and kindess; very dear”
>99% girls
Kara
“one who is pure” · “dearly loved”
>99% girls
Caitlin
“one who is pure; virginal”
>99% girls