Killian
2025 SSA
2025 SSA
About Killian
Killian – aka Cillian – is a spirited yet resonant Gaelic name that was borne by several Irish saints and could make a distinctive replacement for the dated Kelly. Kylian is another spelling that's gaining traction, thanks to French soccer star Kylian Mbappé. Possible downsides: an unsavory first syllable and a connection to the trendy brew.
Killian for girls#7333 US
Yes, another Irish surname, turned boys' name, turned unisex name. But we think this one has a bit more going for it than Logan or Mason, given its similarity in sound to very traditional feminine names Gillian and Lillian.
Pronounced KIL-yun.
As of October 2026, Killian ranked #418 in US births in 2025 SSA, peaked at #248 in 2017, Nameberry popularity #399.
Popularity & trends
Data table
| Year | US rank · boys | Births · boys | US rank · girls | Births · girls |
|---|---|---|---|---|
| 2014 | #511 | 545 | — | 0 |
| 2015 | #349 | 976 | — | 0 |
| 2016 | #264 | 1,382 | — | 0 |
| 2017 | #248 | 1,505 | — | 0 |
| 2018 | #287 | 1,229 | — | 0 |
| 2019 | #311 | 1,089 | — | 0 |
| 2020 | #352 | 899 | — | 0 |
| 2021 | #347 | 939 | — | 0 |
| 2022 | #364 | 902 | — | 0 |
| 2023 | #367 | 884 | — | 0 |
| 2024 | #369 | 884 | — | 0 |
| 2025 | #418 | 770 | — | 0 |
World rankings
Killian for boys
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Killian on lists
Famous Killians
- Killian BrennanBoy
Irish footballer
- Killian MillerBoy
U.S. Congressman from New York
- Killian Killian Van RensselaerBoy
U.S. Congressman from New York
- Killian OvermeireBoy
Belgian footballer
- Killian TillieBoy
French basketball player
- Killian DonnellyBoy
Irish actor and singer
- Killian ScottBoy
Irish actor
- Killian Marcus Gastineau (b. 1989)Boy
son of NFL player Mark Gastineau and actress Brigette Nielsen
Killian in pop culture
- Killian GardinerBoy
character on TV's "Witches of East End"
- Killian Gottesheim of the River FarmBoy
character in "Prince Otto" (1885) by Robert Louis Stevenson
- Killian Jones aka Captain HookBoy
character on TV's "Once Upon A Time"
- Killian MacEwanBoy
character from the "Sweep" book series by Cate Tiernan
- Killian FangbattleGirl
orc woman from D&D podcast The Adventure Zone