Cosmo vs Niall

Baby Name Comparison — 2026

Cosmo

Boy #1,691 Most Popular 2 Syllables

"order, universe"

Origin: Greek

Italian Greek English American

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Boy #1,586 Most Popular 1 Syllable

"champion"

Origin: Old Irish

Irish Scottish English

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Cosmo Rank #1,691

Niall Rank #1,586

Niall is more popular, ranked #1586 vs #1691 for Cosmo.

Is Cosmo or Niall more popular?

Niall is more popular, ranked #1586 compared to Cosmo at #1691 in the United States.

What do Cosmo and Niall mean?

Cosmo means "order, universe" (Greek origin). Niall means "champion" (Old Irish origin).

Are Cosmo and Niall boy or girl names?

Cosmo is primarily a boy name. Niall is primarily a boy name.