Given name & surname · also Irish, Gaelic
Cassidy
“curly-haired girl”·“a clever man”·“a curly-haired man”
Cassidy is used as a given name and a surname. Interpretations include “curly-haired girl”, “a clever man”, “a curly-haired man”, and “one who is ingenious”. These belong to different or overlapping naming contexts.
Meaning & origin
What it means
Interpretations include “curly-haired girl”, “a clever man”, “a curly-haired man”, and “one who is ingenious”. These belong to different or overlapping naming contexts.
Where it comes from
An origin associated with this spelling is Irish.
The story
Published U.S. birth records include this spelling as early as 1968. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Cassidy through the years
- Babies since 1880
- 64,583
- 3,735 boys · 60,848 girls
- Most popular year
- 1999
- 3,449 babies
- 2025
- 609
- #541 for girls · #2,575 for boys
- 2021–25 vs 2016–20
- −31%
- Easing
Boys, girls and both
The balance of boys and girls given this name has shifted over time. Recent births are 7% boys.
Where it’s given
By the numbers
In 2025, this name appeared in 558 U.S. birth records for girls, ranking No. 541 among girls’ names. Average annual use for girls was 32.1% lower in 2021–2025 than in 2016–2020. Its largest published annual count for girls was 3,395 in 1999. It also appeared in 51 birth records for boys in 2025. In 2025, California had the largest reported state-level birth count for girls with this name (70). Published U.S. population figures for this spelling include 55,593 as a first name in 2020; 25,508 as a surname in 2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Cassidy’s family of names
In English usage, Cassidy has a diminutive in Cassie. Cassidy has a related form in Cass. In English usage, Cassidy has a diminutive in Cass.
Inner ring: spellings · middle: nicknames and forms · outer: across languages.
Nicknames & forms 24
Diminutives, pet forms, short forms and variants used alongside the name.
Spellings & scripts 3
The same name written differently, including transliterations into other scripts.
Across languages 1
Equivalents and cognates in other languages, plus older forms it grew from.
See also 1
Names our sources mention alongside this one. They are related in story or meaning, not forms of this name.
People named Cassidy
- Cassidy FreemanAmerican actress and singerborn 1982
- Cassidy HutchinsonAmerican political staffer (1996-)
- Cassidy RaeAmerican actressborn 1976
- DJ CassidyAmerican DJ and record producerborn 1981
- Cassidy GiffordAmerican actressborn 1993
- Cassidy KrugAmerican diverborn 1985
- Cassidy DavisAssociation footballerborn 1994
- Cassidy WolfAmerican model, Miss California Teen USA 2013born 1994
- Cassidy LichtmanAmerican volleyball playerborn 1989
Listed by how widely each person is written about, which says nothing about the name itself.
Appears in
Similar names
If you love Cassidy, these share its style, era, origin or sound, from outside its own family.
Kiana
“from an ancient family” · “of an ancient family”
>99% girls
Caitlyn
“one who is pure; virginal”
>99% girls
Keira
“little dark-haired one” · “having dark features; the little dark one”
>99% girls
Brianna
“from the high hill; one who ascends”
>99% girls
Catriona
“one who is pure; virginal”
>99% girls
Kiera
“little dark-haired one” · “having dark features; the little dark one”
>99% girls
McKenna
“the son of Kenna; to ascend”
>99% girls
Keara
“little dark-haired one”
>99% girls