Callister vs Oslo

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 #1,932 Most Popular 2 Syllables

"meadow of the gods"

Origin: Old Norse

Norwegian Scandinavian American

✓ All Clear

Callister Rank #43,579

Oslo Rank #1,932

Oslo is more popular, ranked #1932 vs #43579 for Callister.

Is Callister or Oslo more popular?

Oslo is more popular, ranked #1932 compared to Callister at #43579 in the United States.

What do Callister and Oslo mean?

Callister means "defender of men" (Greek via Gaelic origin). Oslo means "meadow of the gods" (Old Norse origin).

Are Callister and Oslo boy or girl names?

Callister is primarily a boy name. Oslo is primarily a boy name.