Killian vs Mia

Baby Name Comparison — 2026

Killian

Boy #370 Most Popular 3 Syllables

Meaning

"associated with the church"

Origin: Irish Gaelic

Cultural Roots

Irish French American English

Quick Stats

Popularity Rank
#370
Total SSA Count
884
Syllables
3
Formality
Moderate
Nicknames
Killy, Kill, Ian

Playground Safety Score

✓ All Clear
Full profile for Killian →

Mia

Girl #5 Most Popular 2 Syllables

Meaning

"mine, beloved"

Origin: Scandinavian

Cultural Roots

Italian Scandinavian Spanish

Quick Stats

Popularity Rank
#5
Total SSA Count
12,113
Syllables
2
Formality
Casual

Playground Safety Score

✓ All Clear
Full profile for Mia →

Popularity Comparison

Killian Rank #370
Mia Rank #5

Mia is more popular, ranked #5 vs #370 for Killian.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Killian ___

  • Killian James
  • Killian Patrick
  • Killian Thomas
  • Killian Finn
  • Killian Rory
  • Killian Sean

Mia ___

  • Mia Rose
  • Mia Grace
  • Mia Jane
  • Mia Claire
  • Mia Elizabeth
  • Mia Louise

Sibling Name Ideas

Names that pair well as siblings.

If you choose Killian

Cormac Riordan Aoife Declan Niamh

If you choose Mia

Liam Noah Sophia Olivia Ava

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Killian or Mia more popular?

Mia is more popular, ranked #5 compared to Killian at #370 in the United States.

What do Killian and Mia mean?

Killian means "associated with the church" (Irish Gaelic origin). Mia means "mine, beloved" (Scandinavian origin).

Are Killian and Mia boy or girl names?

Killian is primarily a boy name. Mia is primarily a girl name.

More Comparisons

Mia vs Killian Killian vs Iker Killian vs Nicolas Killian vs Ridge Killian vs Troy
← Full profile: Killian ← Full profile: Mia Browse all baby names