Killian

Church; strife — a boy name of Irish origin

GenderBoy
OriginIrish
MeaningChurch; strife
PronunciationKIL-ee-un

Popularity of Killian in the United States

#418Rank in 2025
770Births in 2025
#248 in 2017Peak Popularity
↓ Declining10-Year Trend

Data: U.S. Social Security Administration (SSA). Based on all Social Security card applications for births in the United States.

Meaning & Origin of Killian

Killian comes from the Irish name Cillian, likely built on "cill," meaning "church" or "monk's cell," though some scholars connect it to a root meaning "strife" or "conflict." The name honors Saint Killian, a seventh-century Irish missionary bishop who evangelized in Franconia (modern-day Germany) and is venerated as a patron saint of Würzburg. Killian has grown steadily popular in the United States, Ireland, and France, prized for its strong sound and deep Celtic Christian heritage.

Killian Around the World

Killian is used in 0 languages worldwide, with 2+ international variants.

Languages
Details

TypeMale given name

International Variants
Kélian
Kylian

Linguistic data: Wikidata (CC0). Variants and language usage may vary by region.

Nicknames for Killian

KillKi

Famous People Named Killian

  • Killian Hayes — French-American NBA point guard
  • Killian Tillie — French professional basketball player

Similar Names to Killian

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Also consider:Cillian

Sibling Name Ideas for Killian

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Frequently Asked Questions

What does the name Killian mean?

Killian is a boy name of Irish origin meaning "Church; strife." Killian comes from the Irish name Cillian, likely built on "cill," meaning "church" or "monk's cell," though some scholars connect it to a root meaning "strife" or "conflict." The name honors Saint Killian, a seventh-century Irish missionary bishop who evangelized in Franconia (modern-day Germany) and is venerated as a patron saint of Würzburg.

How do you pronounce Killian?

Killian is pronounced KIL-ee-un. Common variations include Kilian, Cillian, Killean.

Is Killian a boy name?

Yes, Killian is traditionally a boy name. Popular nicknames include Kill, Ki.

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