Rex vs Reign

Baby Name Comparison — 2026

Rex

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Boy #624 Most Popular 1 Syllable

"rule, sovereignty"

Origin: Old French

English American

✓ All Clear

Rex Rank #793

Reign Rank #624

Reign is more popular, ranked #624 vs #793 for Rex.

Is Rex or Reign more popular?

Reign is more popular, ranked #624 compared to Rex at #793 in the United States.

What do Rex and Reign mean?

Rex means "king" (Latin origin). Reign means "rule, sovereignty" (Old French origin).

Are Rex and Reign boy or girl names?

Rex is primarily a boy name. Reign is primarily a boy name.