Killian vs Bo

Baby Name Comparison — 2026

Killian

Boy #370 Most Popular 3 Syllables

"associated with the church"

Origin: Irish Gaelic

Irish French American English

✓ All Clear

Boy #452 Most Popular 1 Syllable

"to live, to dwell"

Origin: Old Norse

Scandinavian American Chinese

24 High Risk

{:type=>:nickname, :severity=>:medium, :message=>"'Bo' can be twisted to 'bo'"}

Killian Rank #370

Bo Rank #452

Killian is more popular, ranked #370 vs #452 for Bo.

Is Killian or Bo more popular?

Killian is more popular, ranked #370 compared to Bo at #452 in the United States.

What do Killian and Bo mean?

Killian means "associated with the church" (Irish Gaelic origin). Bo means "to live, to dwell" (Old Norse origin).

Are Killian and Bo boy or girl names?

Killian is primarily a boy name. Bo is primarily a boy name.