Callister vs Aj

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 #2,341 Most Popular 2 Syllables

"initial-name, typically Andrew James or Anthony John"

Origin: English

American English

✓ All Clear

Callister Rank #43,579

Aj Rank #2,341

Aj is more popular, ranked #2341 vs #43579 for Callister.

Is Callister or Aj more popular?

Aj is more popular, ranked #2341 compared to Callister at #43579 in the United States.

What do Callister and Aj mean?

Callister means "defender of men" (Greek via Gaelic origin). Aj means "initial-name, typically Andrew James or Anthony John" (English origin).

Are Callister and Aj boy or girl names?

Callister is primarily a boy name. Aj is primarily a boy name.