Niall vs Cosmo

Baby Name Comparison — 2026

Niall

Boy #1,586 Most Popular 1 Syllable

"champion"

Origin: Old Irish

Irish Scottish English

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Boy #1,691 Most Popular 2 Syllables

"order, universe"

Origin: Greek

Italian Greek English American

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Niall Rank #1,586

Cosmo Rank #1,691

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

Is Niall or Cosmo more popular?

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

What do Niall and Cosmo mean?

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

Are Niall and Cosmo boy or girl names?

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