Rex vs Brock

Baby Name Comparison — 2026

Rex

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Boy #707 Most Popular 1 Syllable

"brook, small stream"

Origin: Old English

American English Australian

✓ All Clear

Rex Rank #793

Brock Rank #707

Brock is more popular, ranked #707 vs #793 for Rex.

Is Rex or Brock more popular?

Brock is more popular, ranked #707 compared to Rex at #793 in the United States.

What do Rex and Brock mean?

Rex means "king" (Latin origin). Brock means "brook, small stream" (Old English origin).

Are Rex and Brock boy or girl names?

Rex is primarily a boy name. Brock is primarily a boy name.