Callister vs Cosmo

Baby Name Comparison — 2026

Callister

Boy #43,579 Most Popular 3 Syllables

"defender of men"

Origin: Greek via Gaelic

Scottish Manx Irish

✓ All Clear

Boy #1,691 Most Popular 2 Syllables

"order, universe"

Origin: Greek

Italian Greek English American

✓ All Clear

Callister Rank #43,579

Cosmo Rank #1,691

Cosmo is more popular, ranked #1691 vs #43579 for Callister.

Is Callister or Cosmo more popular?

Cosmo is more popular, ranked #1691 compared to Callister at #43579 in the United States.

What do Callister and Cosmo mean?

Callister means "defender of men" (Greek via Gaelic origin). Cosmo means "order, universe" (Greek origin).

Are Callister and Cosmo boy or girl names?

Callister is primarily a boy name. Cosmo is primarily a boy name.