Callister vs Rui

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 #2,294 Most Popular 2 Syllables

"glorious ruler"

Origin: Germanic via Portuguese

Portuguese Brazilian Japanese Chinese

✓ All Clear

Callister Rank #43,579

Rui Rank #2,294

Rui is more popular, ranked #2294 vs #43579 for Callister.

Is Callister or Rui more popular?

Rui is more popular, ranked #2294 compared to Callister at #43579 in the United States.

What do Callister and Rui mean?

Callister means "defender of men" (Greek via Gaelic origin). Rui means "glorious ruler" (Germanic via Portuguese origin).

Are Callister and Rui boy or girl names?

Callister is primarily a boy name. Rui is primarily a boy name.