Cillian
KIL-ee-un
Boy
Average rank #261 across 6 of 7 countries
Etymology
Meaning & origin
Irish
Probably from Gaelic ceall "church" combined with a diminutive suffix. This was the name of a 7th-century Irish saint who evangelized in Franconia. He was martyred in Würzburg.
Popularity
How popular is Cillian?
🏴 England & Wales
#177
in 2024
🏴 Scotland
#100
in 2025
🇮🇪 Ireland
#9
in 2025
🇺🇸 USA
#507
in 2025
🇨🇦 Canada
#468
in 2024
🇳🇿 New Zealand
#302
in 2025
Not in top rankings for: 🇦🇺 Australia
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