Killian vs Colin

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 #335 Most Popular 2 Syllables

"young dog, whelp"

Origin: Irish/Scottish Gaelic

English Irish Scottish American

✓ All Clear

Killian Rank #370

Colin Rank #335

Colin is more popular, ranked #335 vs #370 for Killian.

Is Killian or Colin more popular?

Colin is more popular, ranked #335 compared to Killian at #370 in the United States.

What do Killian and Colin mean?

Killian means "associated with the church" (Irish Gaelic origin). Colin means "young dog, whelp" (Irish/Scottish Gaelic origin).

Are Killian and Colin boy or girl names?

Killian is primarily a boy name. Colin is primarily a boy name.