Mack vs Kieran

Baby Name Comparison — 2026

Mack

Boy #499 Most Popular 1 Syllable

"son of"

Origin: Scottish Gaelic

Scottish Irish American

✓ All Clear

Boy #441 Most Popular 2 Syllables

"little dark one"

Origin: Irish Gaelic (ciar + -án)

Irish Scottish English

✓ All Clear

Mack Rank #499

Kieran Rank #441

Kieran is more popular, ranked #441 vs #499 for Mack.

Is Mack or Kieran more popular?

Kieran is more popular, ranked #441 compared to Mack at #499 in the United States.

What do Mack and Kieran mean?

Mack means "son of" (Scottish Gaelic origin). Kieran means "little dark one" (Irish Gaelic (ciar + -án) origin).

Are Mack and Kieran boy or girl names?

Mack is primarily a boy name. Kieran is primarily a boy name.