Rex vs Mac

Baby Name Comparison — 2026

Rex

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Boy #696 Most Popular 1 Syllable

"son of"

Origin: Scottish Gaelic

Scottish Irish American

✓ All Clear

Rex Rank #793

Mac Rank #696

Mac is more popular, ranked #696 vs #793 for Rex.

Is Rex or Mac more popular?

Mac is more popular, ranked #696 compared to Rex at #793 in the United States.

What do Rex and Mac mean?

Rex means "king" (Latin origin). Mac means "son of" (Scottish Gaelic origin).

Are Rex and Mac boy or girl names?

Rex is primarily a boy name. Mac is primarily a boy name.