Given name
Cailyn
“a slender warrior; one who is slender and fair”·“a young woman; a lass”
Cailyn is a variant of Caelan. One interpretation is “a slender warrior; one who is slender and fair.” Cailyn is a variant of Cailin. One interpretation is “a young woman; a lass.”
Meaning & origin
What it means
Cailyn is a variant of Caelan. One interpretation is “a slender warrior; one who is slender and fair.” Cailyn is a variant of Cailin. One interpretation is “a young woman; a lass.”
Explained through its name family
The story
Published U.S. birth records include this spelling as early as 1979. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Cailyn through the years
- Babies since 1880
- 5,554
- 5 boys · 5,549 girls
- Most popular year
- 2009
- 401 babies
- 2025
- 45
- #3,728 for girls · #12,347 for boys
- 2021–25 vs 2016–20
- −35%
- Easing
Where it’s given
By the numbers
In 2025, this name appeared in 40 U.S. birth records for girls, ranking No. 3,728 among girls’ names. Average annual use for girls was 36.0% lower in 2021–2025 than in 2016–2020. Its largest published annual count for girls was 401 in 2009. It also appeared in 5 birth records for boys in 2025. In 2025, Georgia and Texas shared the largest reported state-level birth count for girls with this name (5 each). Published U.S. population figures for this spelling include 4,718 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.
Cailyn’s family of names
Cailyn has a related form in Cailin. Cailyn has a related form in Caelan.
The ring: nicknames and forms.
Nicknames & forms 5
Diminutives, pet forms, short forms and variants used alongside the name.
Similar names
If you love Cailyn, these share its style, era, origin or sound, from outside its own family.