What does Killian mean?
Killian /kil-lian/ 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.
Affiliated boy name: Cillian.
Killian▲ has 1 more related form via Kelly: Kelley▼.Kreatif forms: Kellian, Killianna, Kilna. [more]
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. Census)
Charted below is the birth name popularity of Killian for boys. Killian entered the list in 1995 and reached its apex rank of #516 in the U.S. in the year 2014. (2014 Birth Statistics)
Below is a charted comparison of the popularity of the boy name Killian and affiliated names. Kelly, Kelley and Cillian are the popular alternative forms of Killian (#516 2 years ago) listed in the Top 1000. These relations of Killian reached the apex of their popularity during 1960-1969 (usage of 0.2888%) and are somewhat less common today (usage 0.121%, 58.1% less). Kelly is the clear favorite, although Killian seems to be getting popular too, and Kelly has become less popular. (2014 Birth Statistics)