Sonny vs Killian

Baby Name Comparison — 2026

Sonny

Boy #336 Most Popular 2 Syllables

"son, young boy"

Origin: English

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Boy #370 Most Popular 3 Syllables

"associated with the church"

Origin: Irish Gaelic

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Sonny Rank #336

Killian Rank #370

Sonny is more popular, ranked #336 vs #370 for Killian.

Is Sonny or Killian more popular?

Sonny is more popular, ranked #336 compared to Killian at #370 in the United States.

What do Sonny and Killian mean?

Sonny means "son, young boy" (English origin). Killian means "associated with the church" (Irish Gaelic origin).

Are Sonny and Killian boy or girl names?

Sonny is primarily a boy name. Killian is primarily a boy name.