Recent in Baby
When Baby Resists SolidsWhen Baby Resists SolidsBaby Biting TipsBaby Biting Tips5 Tips To Help Prevent Highchair Injuries5 Tips To Help Prevent Highchair InjuriesWhen Baby and Pet MeetWhen Baby and Pet MeetTreatments for ColicTreatments for ColicBaby Milestones – The First YearBaby Milestones – The First YearTips for Relieving Teething PainTips for Relieving Teething PainBenefits of Making Your Own Baby FoodBenefits of Making Your Own Baby Food

Home › Baby Names Directory › Kaithlyn

Kaithlyn

♀ Girl

Pronounced KAYTH-lin /ˈkeɪθ.lɪn/Medium

Meaning: Kaithlyn is a modern respelling of Kaitlyn or Caitlin, an Irish form of Katherine, from the Greek katharos, 'pure'. The -th- spelling is a coinage; the meaning follows Katherine.Low

In 30 seconds: A modern respelling: Kaithlyn reworks Kaitlyn, from Katherine, 'pure' (said 'KAYTH-lin').
💕 Browse more names
Origin LowEnglish, Irish
MeaningKaithlyn is a modern respelling of Kaitlyn or Caitlin, an Irish form of Katherine, from the Greek katharos, 'pure'. The -th- spelling is a coinage; the meaning follows Katherine.
U.S. rank (2024)#12718 ↘ Falling
2024 U.S. births7 girls (0.00% of U.S. girls)
Peak year2002
Total births (all-time)≈ 383

Popularity in the U.S. · SSA data

peak 200319852024

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

As a girl's name, Kaithlyn is a modern respelling of Kaitlyn or Caitlin — an Irish form of Katherine, 'pure'. The spelling is a coinage, the roots old. A crisp, two-beat pick (said 'KAYTH-lin').

It appears only rarely for girls in the U.S. Rare, modern, and classic-rooted.

Did you know? Kaithlyn gives Kaitlyn a -th- twist, keeping its meaning from Katherine, 'pure'. Caitlin is the classic Irish form — a fresh, coined take, said 'KAYTH-lin'.
Overall data confidence 42%
References — Kaithlyn — Respelling of Kaitlyn/Caitlin; from Katherine, 'pure'

Variations

KaitlynCaitlinKatelyn

Nicknames

KaitLyn

Famous Bearers

  • Famous bearers coming soon.

If you like Kaithlyn…

Kaitlyn— the base name Kaithlyn respells
Caitlin— a like Irish Katherine form
Katelyn— a like -lyn respelling
Kathleen— a like Kath- Katherine pick

Explore names like Kaithlyn

By thememodernheritagerespellingmelodic

All themes →All meanings →All origins →

Frequently Asked

What does the name Kaithlyn mean?

Kaithlyn is a respelling of Kaitlyn or Caitlin, an Irish form of Katherine, 'pure'.

How do you pronounce Kaithlyn?

It's said KAYTH-lin /ˈkeɪθ.lɪn/ — two syllables, stress on the first.

Is Kaithlyn a boy or girl name?

Kaithlyn is used as a girl's name.

How popular is Kaithlyn?

Kaithlyn is a rare name for girls in the U.S.

💬 Ask Nia