Killian is a boy's name of Irish and Celtic origin meaning “church.” In 2024 it was given to 884 boys in the United States.
Killian belongs to the Irish & Celtic tradition. Its meaning — “church” — is the sense carried by its Irish and Celtic roots, and it is the meaning we verified against published sources for this page.
In the United States, Killian first appears in Social Security records in 1915. It climbed to its best-ever rank of #248 in 2017, and in 2024 884 babies received the name — 15,446 in total since 1880. Those are the official counts, not estimates.
More names from the Irish & Celtic shelf:
Killian means “church” in its Irish and Celtic roots. We check every meaning against published sources before it appears here.
Killian is a boy name. In 2024, 884 babies received the name in the US.
Killian comes from the Irish & Celtic tradition.
Killian first appears in US records in 1915. Its best-ever ranking was #248 in 2017, and 884 babies were given the name in 2024.
Meaning and origin for this page were checked against this source. US popularity figures are from the Social Security Administration's public baby-names data. England & Wales figures are from the Office for National Statistics. If you spot an error, write to [email protected] — accuracy is the whole point of this site, and corrections are made fast.
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