Killian is a distinctive choice, ranked #627 in 2025. Your child is likely to be the only Killian in their class.
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UK Rank 2025
#627
US Rank #418
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About the Name Killian
Killian has held its ground, ranked #627 in 2025 and never far from its best of #492 in 2022 — a name with lasting rather than trend-driven appeal. The name has been a consistent presence in UK records since 1996.
Killian is uncommon in the UK, so your child is very likely to be the only Killian in their class.
In the US it ranks even higher at #369, where it enjoys a particularly strong following.
Michael Killian — Michael Killian is a former South African rugby union player.
Killian Mottet — Killian Mottet is a Swiss professional ice hockey player currently playing for HC Fribourg-Gottéron of the National League (NL).
Biographical summaries are shortened from Wikipedia and are used under the CC BY-SA 4.0 licence; those summaries remain available under that same licence.
Frequently Asked Questions
Common questions about the name Killian
Unlikely. With around 59 UK babies named Killian per year, your child will almost certainly be the only Killian in their class, and possibly the only one in the whole school.
Killian has been fairly steady, ranked #627 in 2025 against #623 in 2020. Its best recorded position was #492 in 2022.
Killian is more popular in the US (#369) than in the UK (#638). Names with strong rankings in both countries tend to have broad cross-cultural appeal, working well for international families or those with ties to both nations.
Notable people named Killian include: Ross Killian, Michael Killian and Killian Mottet. Short summaries for each appear below.
Killian appears in the US top 500 at #369 in 2024 — moderately popular in America, though less so than in the UK.
59
UK babies named Killian (2025)
< 1
Expected classmates with this name (class of 28)
~0.0
In a school of 600
↓ 4 places
Rank change (last 5 years)
🏫 Who else is in the room?
In a typical UK class of 28, highlighted children share the name Killian
Almost certainly the only Killian in the class
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UK Popularity (1996–2025)
Rank and birth count · ONS official data
US Popularity (2020–2025)
Rank · SSA official data
✨ Similar names to Killian
Names with a similar style — each with their own classroom story
The Killian documents controversy (also referred to as Memogate or Rathergate) involved six documents containing false allegations about President George W.