Thomas vs Declan

Baby Name Comparison — 2026

Thomas

Boy #39 Most Popular 2 Syllables

"Twin"

Origin: Aramaic

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✓ All Clear

Boy #131 Most Popular 2 Syllables

"man of prayer"

Origin: Irish Gaelic

Irish English American

✓ All Clear

Thomas Rank #39

Declan Rank #131

Thomas is more popular, ranked #39 vs #131 for Declan.

Is Thomas or Declan more popular?

Thomas is more popular, ranked #39 compared to Declan at #131 in the United States.

What do Thomas and Declan mean?

Thomas means "Twin" (Aramaic origin). Declan means "man of prayer" (Irish Gaelic origin).

Are Thomas and Declan boy or girl names?

Thomas is primarily a boy name. Declan is primarily a boy name.