Declan vs Sebastian

Baby Name Comparison — 2026

Declan

Boy #131 Most Popular 2 Syllables

Meaning

"man of prayer"

Origin: Irish Gaelic

Cultural Roots

Irish English American

Quick Stats

Popularity Rank
#131
Total SSA Count
2,758
Syllables
2
Formality
Moderate
Nicknames
Dec, Decs

Playground Safety Score

✓ All Clear
Full profile for Declan →

Popularity Comparison

Declan Rank #131
Sebastian Rank #14

Sebastian is more popular, ranked #14 vs #131 for Declan.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Declan ___

  • Declan James
  • Declan Patrick
  • Declan Michael
  • Declan Ryan
  • Declan Thomas
  • Declan Cole

Sebastian ___

  • Sebastian James
  • Sebastian Alexander
  • Sebastian Cole
  • Sebastian Grey
  • Sebastian Patrick
  • Sebastian Ray

Sibling Name Ideas

Names that pair well as siblings.

If you choose Declan

Finn Liam Siobhan Aoife Rowan

If you choose Sebastian

Olivia Valentina Maximilian Eleanor Isadora

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 Declan or Sebastian more popular?

Sebastian is more popular, ranked #14 compared to Declan at #131 in the United States.

What do Declan and Sebastian mean?

Declan means "man of prayer" (Irish Gaelic origin). Sebastian means "from Sebastia" (Latin origin).

Are Declan and Sebastian boy or girl names?

Declan is primarily a boy name. Sebastian is primarily a boy name.

More Comparisons

Sebastian vs Declan Declan vs Jason Declan vs Gael Declan vs Graham Declan vs Kyrie
← Full profile: Declan ← Full profile: Sebastian Browse all baby names