Leo vs Declan

Baby Name Comparison — 2026

Leo

Boy #24 Most Popular 2 Syllables

"lion-hearted, brave"

Origin: Latin

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Boy #131 Most Popular 2 Syllables

"man of prayer"

Origin: Irish Gaelic

Irish English American

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Leo Rank #24

Declan Rank #131

Leo is more popular, ranked #24 vs #131 for Declan.

Is Leo or Declan more popular?

Leo is more popular, ranked #24 compared to Declan at #131 in the United States.

What do Leo and Declan mean?

Leo means "lion-hearted, brave" (Latin origin). Declan means "man of prayer" (Irish Gaelic origin).

Are Leo and Declan boy or girl names?

Leo is primarily a boy name. Declan is primarily a boy name.