Cillian
A boys’ name of Irish origin, meaning bright-headed or gray-eyed.
Babies a year
230
England and Wales, 2025
Rarity
Uncommon
among names in use
US popularity
#507
down from #463
UK popularity
#217
230 babies · down from #177
How Cillian has moved
View as table
| Year | US rank |
|---|---|
| 2020 | #957 |
| 2021 | #747 |
| 2022 | #736 |
| 2023 | #593 |
| 2024 | #463 |
| 2025 | #507 |
In 2025, 230 babies in England and Wales were named Cillian. In the US, 168 were, though that figure is from 2017 — the most recent full year we hold.
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