"war strife or church"

Cillian Origin and Meaning

The name Cillian is boy's name of Irish origin meaning "war strife or church".
Cillian is one of the native Irish names that, along with Aiden and Declan, is becoming an unlikely favorite in contemporary America. The Killian spelling has been more popular in the US, but Cillian's star is rising, perhaps thanks to Irish actor Cillian Murphy, star of Oppenheimer and Peaky Blinders.

There are several Saint Cillians, including one who was sent to Bavaria to convert the natives and was martyred for his trouble.

Patrick Woulfe, a Catholic priest who was instrumental in reviving native Irish names in that country after the war for independence from England in the 1920s, theorized that Cillian might also be related to a Gaelic name meaning war.
# 736 in the US

Cillian Rank in US Top 1000

Cillian Popularity

20 Names Similar to Cillian

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Famous People Named Cillian

  • Cillian MurphyIrish actor
  • Cillian SheridanIrish footballer
  • Cillian VallelyIrish musician of band Lunasa

Cillian in Pop Culture

  • Cillian Boydcharacter in the Chaos Walking series by Patrick Ness