MallowbyNames

Kailei

KAY-lay · Of uncertain origin; likely a modern invented name combining elements like Kay and Lei, or a variant of Kailani.

Peak popularity
2010
Usually for
Girls
Trend
Declining since 2010

Declining since 2010.

Popularity of Kailei since 1988

Babies named Kailei per year in U.S. Social Security records. Raw births topped out in 2004, but relative to how few babies were recorded back then, Kailei's real moment was 2010.

1123341990200020102020Most births 2004Girls
Data table (by decade)
DecadeGirls
1980s14
1990s83
2000s282
2010s184
2020s54

Meaning & origin

Kailei is a modern American invention that emerged in 1988 and peaked in popularity in 2010, reflecting the late-2000s trend for names ending in 'lei' or 'lee.' While it has never entered the national top 1000, its relative use has declined from that peak, and it remains an uncommon choice. The name likely combines the phonetic appeal of names like Kaylee or Kailani, with the Hawaiian-sounding suffix Lei giving it a breezy, melodic feel. Its recorded trajectory shows a steady fall in usage since 2010, aligning with broader shifts away from similar invented names. Despite its obscurity, Kailei offers a distinct alternative for parents seeking a contemporary, feminine name with a soft, lyrical sound.

Kailei first appeared in U.S. records in 1988, part of a trend of names ending in -lei or -ley for girls. It may blend the popular syllable Kay (often from Katherine) with Lei (Hawaiian for 'child' or 'garland of flowers'), or be a respelling of Kaylee. Its usage peaked in 2010.

Nicknames & variants

Nicknames: Kai, Lei

Variants: Kaylei, Kailey, Kayley

Sibling names for Kailei

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

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

K is for Kailei, our favorite little girl.

K is for Kailei…”

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

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Questions parents ask

What does the name Kailei mean?
Kailei is a modern invented name, likely formed from the popular elements Kay and Lei, though no single meaning has been historically established.
How popular is Kailei?
Kailei is not currently ranked in the U.S. top 1000. It first appeared in 1988 and peaked in 2010, but its use has been decreasing since then.
Is Kailei a boy or girl name?
Kailei is used almost exclusively for girls.