Killian vs Otto

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 →

Otto

Boy #274 Most Popular 2 Syllables

Meaning

"wealth, fortune, prosperity"

Origin: Old High German

Cultural Roots

German Scandinavian Italian English

Quick Stats

Popularity Rank
#274
Total SSA Count
1,239
Syllables
2
Formality
Moderate

Playground Safety Score

✓ All Clear
Full profile for Otto →

Popularity Comparison

Killian Rank #370
Otto Rank #274

Otto is more popular, ranked #274 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

Otto ___

  • Otto James
  • Otto Friedrich
  • Otto Hans
  • Otto Wilhelm
  • Otto Lee
  • Otto Max

Sibling Name Ideas

Names that pair well as siblings.

If you choose Killian

Cormac Riordan Aoife Declan Niamh

If you choose Otto

Felix Hugo Greta Marta Klaus

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 Otto more popular?

Otto is more popular, ranked #274 compared to Killian at #370 in the United States.

What do Killian and Otto mean?

Killian means "associated with the church" (Irish Gaelic origin). Otto means "wealth, fortune, prosperity" (Old High German origin).

Are Killian and Otto boy or girl names?

Killian is primarily a boy name. Otto is primarily a boy name.

More Comparisons

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