Kiernan vs Kyllian

Baby Name Comparison — 2026

Kiernan

Boy #3,148 Most Popular 2 Syllables

Meaning

"dark one, little dark-haired one"

Origin: Irish Gaelic

Cultural Roots

Irish Scottish American

Quick Stats

Popularity Rank
#3,148
Total SSA Count
39
Syllables
2
Formality
Moderate
Nicknames
Kier, Kier, Nan

Playground Safety Score

✓ All Clear
Full profile for Kiernan →

Kyllian

Boy #3,281 Most Popular 3 Syllables

Meaning

"war, strife"

Origin: Old Irish

Cultural Roots

Irish French Belgian

Quick Stats

Popularity Rank
#3,281
Total SSA Count
36
Syllables
3
Formality
Moderate
Nicknames
Kyl, Killy

Playground Safety Score

✓ All Clear
Full profile for Kyllian →

Popularity Comparison

Kiernan Rank #3,148
Kyllian Rank #3,281

Kiernan is more popular, ranked #3148 vs #3281 for Kyllian.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Kiernan ___

  • Kiernan James
  • Kiernan Patrick
  • Kiernan Michael
  • Kiernan Thomas
  • Kiernan Liam
  • Kiernan Finn

Kyllian ___

  • Kyllian James
  • Kyllian Patrick
  • Kyllian Finn
  • Kyllian Liam
  • Kyllian Sean
  • Kyllian Thomas

Sibling Name Ideas

Names that pair well as siblings.

If you choose Kiernan

Declan Finn Callum Siobhan Niamh

If you choose Kyllian

Declan Ronan Saoirse Fionnuala Cormac

Which Name Fits Your Family?

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1. Which style feels more like your family?

Frequently Asked Questions

Is Kiernan or Kyllian more popular?

Kiernan is more popular, ranked #3148 compared to Kyllian at #3281 in the United States.

What do Kiernan and Kyllian mean?

Kiernan means "dark one, little dark-haired one" (Irish Gaelic origin). Kyllian means "war, strife" (Old Irish origin).

Are Kiernan and Kyllian boy or girl names?

Kiernan is primarily a boy name. Kyllian is primarily a boy name.

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← Full profile: Kiernan ← Full profile: Kyllian Browse all baby names