Kiernan vs Reason

Baby Name Comparison — 2026

Kiernan

Boy #3,148 Most Popular 2 Syllables

"dark one, little dark-haired one"

Origin: Irish Gaelic

Irish Scottish American

✓ All Clear

Boy #3,007 Most Popular 2 Syllables

"rational thought, good judgment"

Origin: Old French/Latin

American

✓ All Clear

Kiernan Rank #3,148

Reason Rank #3,007

Reason is more popular, ranked #3007 vs #3148 for Kiernan.

Is Kiernan or Reason more popular?

Reason is more popular, ranked #3007 compared to Kiernan at #3148 in the United States.

What do Kiernan and Reason mean?

Kiernan means "dark one, little dark-haired one" (Irish Gaelic origin). Reason means "rational thought, good judgment" (Old French/Latin origin).

Are Kiernan and Reason boy or girl names?

Kiernan is primarily a boy name. Reason is primarily a boy name.