Rui vs Callister

Baby Name Comparison — 2026

Rui

Boy #2,294 Most Popular 2 Syllables

"glorious ruler"

Origin: Germanic via Portuguese

Portuguese Brazilian Japanese Chinese

✓ All Clear

Boy #43,579 Most Popular 3 Syllables

"defender of men"

Origin: Greek via Gaelic

Scottish Manx Irish

✓ All Clear

Rui Rank #2,294

Callister Rank #43,579

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

Is Rui or Callister more popular?

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

What do Rui and Callister mean?

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

Are Rui and Callister boy or girl names?

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