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Home › Baby Names Directory › Kailyn

Kailyn

♂ Boy

Pronounced KAY-lin /ˈkeɪ.lɪn/High

Meaning: A modern blend of Kai (variously 'the sea') with the -lyn ending ('a lake'); predominantly a girls' name; here for boys; no single fixed root; routes layeredLow

In 30 seconds: The sea; a lake: Kailyn joins Kai with a -lyn ending. Crisp, modern, and warm. Used for both sexes (here for boys; said 'KAY-lin').
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Origin LowAmerican
MeaningA modern blend of Kai (variously 'the sea') with the -lyn ending ('a lake'); predominantly a girls' name; here for boys; no single fixed root; routes layered
U.S. rank (2024)#5758 ↗ Rising
2024 U.S. births16 boys (0.00% of U.S. boys)
Peak year2024
Total births (all-time)≈ 132

Popularity in the U.S. · SSA data

peak 202419982024

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

Kailyn is a modern blend of Kai — variously 'the sea' (Hawaiian) — with the -lyn ending, from Welsh llyn, 'lake' (routes layered, which we flag). Predominantly a girls' name, it is used here for boys (slug distinguished; nickname Kai).

It registers mostly for girls. Rare for boys, the-sea-plus-a-lake in echo, and crisp.

Did you know? Kailyn blends Kai (variously 'the sea') with the -lyn ending ('a lake') — a crisp, modern coinage, predominantly girls', here for boys (the routes are layered, which we note; said 'KAY-lin').
Overall data confidence 42%
U.S. Social Security Administration name files — recent emergence

Variations

KaylinKaelynKailan

Nicknames

Kai

Famous Bearers

  • Famous bearers coming soon.

If you like Kailyn…

Kaelan— a sound-neighbor Kae- boys' name
Kaden— a fellow modern -en boys' name
Kailand— a kin Kai- boys' name
Kellen— another modern -en boys' name

Explore names like Kailyn

By themeuncertainenglishcoinageamericanunisex
By meaningSea / Water

All themes →All meanings →All origins →

Frequently Asked

What does the name Kailyn mean?

Kailyn blends Kai ('the sea') with -lyn ('a lake'); it has no single fixed meaning, so we flag it.

How do you pronounce Kailyn?

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

Is Kailyn a boy or girl name?

Kailyn is used for both sexes (predominantly girls'); this page covers its use as a boy's name.

How popular is Kailyn?

Kailyn is rare for boys in the U.S.

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