Rex vs Alvin

Baby Name Comparison — 2026

Rex

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Boy #792 Most Popular 2 Syllables

"noble friend, elf friend"

Origin: Old English

English American Scandinavian

✓ All Clear

Rex Rank #793

Alvin Rank #792

Alvin is more popular, ranked #792 vs #793 for Rex.

Is Rex or Alvin more popular?

Alvin is more popular, ranked #792 compared to Rex at #793 in the United States.

What do Rex and Alvin mean?

Rex means "king" (Latin origin). Alvin means "noble friend, elf friend" (Old English origin).

Are Rex and Alvin boy or girl names?

Rex is primarily a boy name. Alvin is primarily a boy name.