Cillian
/K-IH-L-IY-AE-N/
Little church — from the Irish ceall (church, monastic cell) with the diminutive -ín, evoking a small chapel and quiet devotion.
See Cillian scored for your familyQuick — what every parent wants to know about Cillian:
Yes — Cillian is a Christian boy name of Irish origin, meaning “Little church — from the Irish ceall (church, monastic cell) with the diminutive -ín, evoking a small chapel and quiet devotion.”.
How well does Cillian fit your family?
This page tells you what Cillian means. The app tells you whether it's right for your baby — scored against the names already in your family, your heritage, and your baby's exact birth star.
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Six signals — scored for your family, not in the abstract:
Meaning & origin
Cillian is a boy's name of Irish origin, traditionally used in Christian families. The name means "Little church — from the Irish ceall (church, monastic cell) with the diminutive -ín, evoking a small chapel and quiet devotion." and belongs to the Divine cluster — names rooted in sacred meaning and spiritual tradition.
Common among American, British, Irish, European families, Cillian carries cultural weight that goes beyond its dictionary definition — it's a name with a story and a community.
What would a baby named Cillian look like?
NameRoot imagines a one-of-a-kind AI baby portrait for every name, shaped by its heritage — the features, the colouring, the feeling a name like Cillian carries. No two are alike.
See Cillian's portrait — and its full score — the moment you open the app.
See Cillian's baby portrait →What does Cillian's numerology say?
Numerology assigns each name a single-digit destiny number by summing its letter values. Different schools use different mappings — NameRoot computes both so you can see how Cillian resonates in either tradition.
Cillian's destiny number is 33 — but a number only matters in context. The app matches it to your family's own numbers for a real compatibility read. See Cillian's full reading →
Does Cillian go with your family's names?
Cillian breaks into 6 sounds: /K-IH-L-IY-AE-N/. The real test isn't how it sounds alone — it's how it sounds beside the names already in your family: yours, your partner's, and any brothers or sisters. NameRoot scores that harmony, so Cillian sits naturally next to a Mum and Dad like Michael & Anna, or a big sister named Gianna — no awkward clashes, no two names that blur together. Hear Cillian beside your family's names →
Nicknames
Common affectionate forms of Cillian — useful for everyday family conversation, early childhood, or as standalone given names themselves.
Variants across cultures
Cillian appears in different forms across languages and traditions. Each variant carries the same root meaning with a distinct sound and spelling shaped by local phonology.
Names similar to Cillian
If Cillian resonates with you, these names live in the same world — drawn from the same tradition, sharing the same meaning, or echoing a similar sound.
From the same tradition
Other Christian boy names, common in American families
Sharing the same meaning
Other Christian boy names from the Divine cluster
Names that sound similar
Christian boy names that open with the same syllables as Cillian
Explore more names
Keep exploring names like Cillian — by tradition, by meaning, or by first letter.
Common questions about Cillian
What does the name Cillian mean?
Cillian means "Little church — from the Irish ceall (church, monastic cell) with the diminutive -ín, evoking a small chapel and quiet devotion.." It is a boy name of Irish origin, traditionally used in Christian families.
Is Cillian a boy or girl name?
Cillian is most commonly used as a boy name.
What is the origin of the name Cillian?
Cillian is of Irish origin, used in Christian tradition, commonly among American, British, Irish families.
Is Cillian a Christian name?
Yes. Cillian is a boy name traditionally used in Christian families, of Irish origin.
What does Cillian mean in Irish?
Cillian originates from Irish, where it means "Little church — from the Irish ceall (church, monastic cell) with the diminutive -ín, evoking a small chapel and quiet devotion.."
What are common nicknames for Cillian?
Common short forms of Cillian include Cill, Killy.
What is the numerology of Cillian?
Cillian has a Pythagorean destiny number of 33 — the master teacher — unconditional love in action.
See how Cillian scores for your family
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