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What does Killian mean?

Killian /kil-li-an/ as a boys' name is pronounced KIL-ee-an. It is of Irish and Gaelic origin, and the meaning of Killian is "bright-headed". From the same root as Kelly. The name is popular in France.


Killian has 3 variants: Kilean, Kilian and Killean.

Affiliated boy name: Cillian.

Kreatif forms:
(male) Kalian, Killina, ..

(female) Killiney, Kilney, ..

How popular is Killian?

Killian is an uncommonly occurring first name for males but a very prominent last name for both adults and children (#2771 out of 150436, Top 2%). (2000 U.S. Demographics)


Ranking and usage % can show different trends depending on the distribution of names that year.

Charted below is the birth name statistics of Killian for boys. Killian entered the list in 1990 and reached its apex rank of #516 in the U.S. in the year 2014. (2014 U.S. SSA Records)

Top 2000 baby names ranking of Killian name in U.S.

Top 100 baby names ranking of Killian outside U.S.

Below is a charted comparison of the popularity of the boy name Killian and affiliated names. Kelly (#1526 last year), Kilian (#1674) and Cillian (#1717) are the popular alternative forms of Killian (#516 last year) listed in the Top 2000. These relations of Killian reached the apex of their popularity 5 decades ago (usage of 0.1%) and have become much less common since, with the form Kelly becoming somewhat outmoded. Kelly is the clear favorite, although Killian seems to be getting popular too.

Top 2000 baby names ranking of Killian, Cillian, Kelly, Kilian in U.S.

Top 100 baby names ranking of Killian, Cillian outside U.S.

Similar Names


Killian is pronounced similarly to Callan, Collin, Cullan, Cullin, Kaelan, Kaelin, Kalan, Kalin, Kealan, Keallan, Keallin, Keelan, Keelin, Keilan, Keillan, Kelan, Kellan, Kellen, Kellin, Kelwin, Kelwinn, Kylan and Quillan. Other suggested similar names are Ailean, Cullinan, Dallan, Dilan, Dillan, Eilan, Eilean, Eilian, Elian, Emilian, Filian, Fillan, Foillan (see Faolan), Gilean, Gilian, Gillan, Gillean, Gillian, Gillion, Gillman, Gilman, Gilzean, Gullan, Karlan, Karlin, Katlin, Kellton, Kellven, Kian, Kiean, Kienan, Kieran, Kiernan, Kingman, Kiran, Kirklin, Klein, Koltin, Kristian, Mellan, Midian, Milan, Nollan, Rollan, Salvian, Siprian, Stillman, Sullivan, Tallan, Tillman, Vivian and William. These names tend to be more commonly used than Killian.