MallowbyNames

Catlyn

KAT-lin · Of uncertain origin, possibly a variant of Caitlin, which is the Irish form of Katherine, meaning "pure."

Peak popularity
2000
Usually for
Girls
Trend
Declining since 1997

Declining since 1997.

Popularity of Catlyn since 1985

Babies named Catlyn per year in U.S. Social Security records.

1427411990200020102020Most births 2000Girls
Data table (by decade)
DecadeGirls
1980s74
1990s292
2000s199
2010s42
2020s0

Meaning & origin

Catlyn entered the U.S. naming scene in 1985, a time when creative spellings of traditional names were gaining traction. Its peak year was 2000, reflecting the broader popularity of Caitlin and its variants during the 1990s and early 2000s. Since 1997, however, the name has been on a declining trajectory, with its latest recorded use in 2025 showing it outside the top 1000. The name's evolving history mirrors the shift from the classic Irish Caitlin to modernized forms like Catlyn, which offered parents a distinctive twist while keeping a familiar sound. Unlike many names that see a resurgence after a fall, Catlyn has not yet shown signs of revival.

Catlyn is a modern spelling variant of Caitlin, itself an Irish form of Katherine. The name Katherine is of Greek origin, from Aikaterine, with the meaning "pure" attributed through folk etymology linking it to katharos. This particular spelling became more common in the United States during the late 20th century, as parents sought distinctive variations of traditional names.

Nicknames & variants

Nicknames: Cat, Caty, Lyn

Variants: Caitlin, Kaitlyn, Katlyn, Catlin

Sibling names for Catlyn

Names that share Catlyn's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

C is for Catlyn, our favorite little girl.

C is for Catlyn…”

In a Mallowby alphabet book, Catlyn's letter becomes Catlyn's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Catlyn's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does the name Catlyn mean?
Catlyn is generally considered a variant of Caitlin, the Irish form of Katherine, which has been associated with the meaning "pure" from Greek katharos, though the ultimate origin is debated.
How popular is the name Catlyn?
Catlyn first appeared in U.S. records in 1985, peaked in popularity in 2000, and has been falling in use since 1997. It ranked outside the top 1000 in the most recent data (2025).
Is Catlyn a girl's name?
Yes, Catlyn is typically used as a feminine name.