Cillian vs Dillion

Baby Name Comparison — 2026

Dillion

Boy #5,680 Most Popular 3 Syllables

Meaning

"faithful, loyal"

Origin: Old Irish Dallán

Cultural Roots

Irish Welsh American English

Quick Stats

Popularity Rank
#5,680
Total SSA Count
17
Syllables
3
Formality
Moderate
Nicknames
Dil, Dilly

Playground Safety Score

✓ All Clear
Full profile for Dillion →

Popularity Comparison

Cillian Rank #464
Dillion Rank #5,680

Cillian is more popular, ranked #464 vs #5680 for Dillion.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Cillian ___

  • Cillian James
  • Cillian Patrick
  • Cillian Michael
  • Cillian Finn
  • Cillian Declan
  • Cillian Joseph

Dillion ___

  • Dillion James
  • Dillion Patrick
  • Dillion Michael
  • Dillion Thomas
  • Dillion Robert
  • Dillion Connor

Sibling Name Ideas

Names that pair well as siblings.

If you choose Cillian

Declan Finn Conor Siobhan Saoirse

If you choose Dillion

Finn Declan Connor Siobhan Maeve

Which Name Fits Your Family?

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1. Which style feels more like your family?

Frequently Asked Questions

Is Cillian or Dillion more popular?

Cillian is more popular, ranked #464 compared to Dillion at #5680 in the United States.

What do Cillian and Dillion mean?

Cillian means "strife, war" (Old Irish origin). Dillion means "faithful, loyal" (Old Irish Dallán origin).

Are Cillian and Dillion boy or girl names?

Cillian is primarily a boy name. Dillion is primarily a boy name.

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← Full profile: Cillian ← Full profile: Dillion Browse all baby names