Given name
Kacy
“a vigilant man; one who is alert”·“a vigilant woman”
Kacy is a variant of Kacey. One Irish interpretation is “a vigilant man; one who is alert.” Kacy is a variant of Kasey. In Irish use, Kasey carries the interpretation “a vigilant woman.”
Meaning & origin
What it means
Kacy is a variant of Kacey. One Irish interpretation is “a vigilant man; one who is alert.” Kacy is a variant of Kasey. In Irish use, Kasey carries the interpretation “a vigilant woman.”
Explained through its name family
Where it comes from
Kacy is a variant of Kacey. An origin associated with Kacey is Irish.
Explained through its name family
The story
Published U.S. birth records include this spelling as early as 1956. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Kacy through the years
- Babies since 1880
- 6,047
- 998 boys · 5,049 girls
- Most popular year
- 1990
- 222 babies
- 2025
- 22
- #8,594 for girls · #7,938 for boys
- 2021–25 vs 2016–20
- −23%
- Easing
Boys, girls and both
The balance of boys and girls given this name has shifted over time. Recent births are 24% boys.
By the numbers
In 2025, this name appeared in 12 U.S. birth records for girls, ranking No. 8,594 among girls’ names. Average annual use for girls was 45.3% lower in 2021–2025 than in 2016–2020. Its largest published annual count for girls was 196 in 1990. It also appeared in 10 birth records for boys in 2025. Published U.S. population figures for this spelling include 5,483 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.
Kacy’s family of names
Kacy has a related form in Kasey. Kacy has a related form in Kacey.
Inner ring: nicknames and forms · outer: across languages.
Nicknames & forms 3
Diminutives, pet forms, short forms and variants used alongside the name.
Across languages 3
Equivalents and cognates in other languages, plus older forms it grew from.
People named Kacy
- Kacy CatanzaroAmerican gymnast, wrestler, and American Ninja Warrior competitorborn 1990
- Kacy HillAmerican singer-songwriter and model (born 1994)
Listed by how widely each person is written about, which says nothing about the name itself.
Similar names
If you love Kacy, these share its style, era, origin or sound, from outside its own family.
Katy
“one who is pure; virginal”
>99% girls
Karly
“a small, strong woman”
>99% girls
Karli
“a free man” · “a small, strong woman”
>99% girls
Kara
“one who is pure” · “dearly loved”
>99% girls
Carly
“a free woman” · “from the farmer's meadow”
>99% girls
Kaila
“crowned with laurel” · “a stylish man”
>99% girls
Kirsten
“follower of Christ”
>99% girls
Kodie
“one who is helpful”
32% boys · 68% girls