Rex vs Harold

Baby Name Comparison — 2026

Rex

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Boy #991 Most Popular 2 Syllables

"army ruler, power of the army"

Origin: Old English

English Scandinavian American

✓ All Clear

Rex Rank #793

Harold Rank #991

Rex is more popular, ranked #793 vs #991 for Harold.

Is Rex or Harold more popular?

Rex is more popular, ranked #793 compared to Harold at #991 in the United States.

What do Rex and Harold mean?

Rex means "king" (Latin origin). Harold means "army ruler, power of the army" (Old English origin).

Are Rex and Harold boy or girl names?

Rex is primarily a boy name. Harold is primarily a boy name.