Killian vs Oscar

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 →

Oscar

Boy #217 Most Popular 2 Syllables

Meaning

"God's spear"

Origin: Old English

Cultural Roots

English Irish Scandinavian Spanish

Quick Stats

Popularity Rank
#217
Total SSA Count
1,656
Syllables
2
Formality
Moderate
Nicknames
Oz, Ossie

Playground Safety Score

✓ All Clear
Full profile for Oscar →

Popularity Comparison

Killian Rank #370
Oscar Rank #217

Oscar is more popular, ranked #217 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

Oscar ___

  • Oscar James
  • Oscar William
  • Oscar Henry
  • Oscar Finn
  • Oscar Reid
  • Oscar Hugh

Sibling Name Ideas

Names that pair well as siblings.

If you choose Killian

Cormac Riordan Aoife Declan Niamh

If you choose Oscar

Violet Beatrice Arthur Felix Harriet

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 Oscar more popular?

Oscar is more popular, ranked #217 compared to Killian at #370 in the United States.

What do Killian and Oscar mean?

Killian means "associated with the church" (Irish Gaelic origin). Oscar means "God's spear" (Old English origin).

Are Killian and Oscar boy or girl names?

Killian is primarily a boy name. Oscar is primarily a boy name.

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← Full profile: Killian ← Full profile: Oscar Browse all baby names