Killian
BoyIrish
Killian is a boy name of Irish origin meaning "little church".
About this name
Gender
Boy
Language
Irish
Religion
Christian
Popularity
3 / 100
Syllables
2
Length
7 letters
Meaning
little church
Etymology
Derived from Old Irish *cill* ‘church’ with the diminutive suffix *-ín*, forming *Cillín*; Anglicized as Killian.
Famous People Named Killian
- Killian Peier — Swiss ski jumper
Frequently Asked Questions About Killian
What does the name Killian mean?
Killian means "little church", and is of Irish origin.
What is the origin of the name Killian?
Killian originates from Irish, commonly used in Europe.
Is Killian a boy or girl name?
Killian is typically used as a boy name.
What religion is the name Killian associated with?
Killian is associated with Christian.
Are there famous people named Killian?
Yes — notable people named Killian include Killian Peier (Swiss ski jumper).
Last updated: June 2026