Cillian vs Mack

Baby Name Comparison — 2026

Cillian

Boy #464 Most Popular 3 Syllables

"strife, war"

Origin: Old Irish

Irish Celtic

✓ All Clear

Boy #499 Most Popular 1 Syllable

"son of"

Origin: Scottish Gaelic

Scottish Irish American

✓ All Clear

Cillian Rank #464

Mack Rank #499

Cillian is more popular, ranked #464 vs #499 for Mack.

Is Cillian or Mack more popular?

Cillian is more popular, ranked #464 compared to Mack at #499 in the United States.

What do Cillian and Mack mean?

Cillian means "strife, war" (Old Irish origin). Mack means "son of" (Scottish Gaelic origin).

Are Cillian and Mack boy or girl names?

Cillian is primarily a boy name. Mack is primarily a boy name.