Dillan vs Oliver

Baby Name Comparison — 2026

Dillan

Boy #2,887 Most Popular 2 Syllables

Meaning

"great tide, sea flow"

Origin: Welsh

Cultural Roots

Welsh English Irish American

Quick Stats

Popularity Rank
#2,887
Total SSA Count
44
Syllables
2
Formality
Moderate
Nicknames
Dill

Playground Safety Score

✓ All Clear
Full profile for Dillan →

Oliver

Boy #3 Most Popular 3 Syllables

Meaning

"olive tree"

Origin: Latin

Cultural Roots

English French Scandinavian

Quick Stats

Popularity Rank
#3
Total SSA Count
15,343
Syllables
3
Formality
Moderate
Nicknames
Ollie, Oli

Playground Safety Score

✓ All Clear
Full profile for Oliver →

Popularity Comparison

Dillan Rank #2,887
Oliver Rank #3

Oliver is more popular, ranked #3 vs #2887 for Dillan.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Dillan ___

  • Dillan James
  • Dillan Lee
  • Dillan Thomas
  • Dillan Michael
  • Dillan Owen
  • Dillan Rhys

Oliver ___

  • Oliver James
  • Oliver Thomas
  • Oliver William
  • Oliver Henry
  • Oliver John
  • Oliver Benjamin

Sibling Name Ideas

Names that pair well as siblings.

If you choose Dillan

Brennan Kieran Declan Sienna Bryn

If you choose Oliver

Olivia Charlotte Emma Sophia Amelia

Which Name Fits Your Family?

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1. Which style feels more like your family?

Frequently Asked Questions

Is Dillan or Oliver more popular?

Oliver is more popular, ranked #3 compared to Dillan at #2887 in the United States.

What do Dillan and Oliver mean?

Dillan means "great tide, sea flow" (Welsh origin). Oliver means "olive tree" (Latin origin).

Are Dillan and Oliver boy or girl names?

Dillan is primarily a boy name. Oliver is primarily a boy name.

More Comparisons

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← Full profile: Dillan ← Full profile: Oliver Browse all baby names