Rex vs Marvin

Baby Name Comparison — 2026

Rex

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Boy #672 Most Popular 2 Syllables

"sea fortress, sea friend"

Origin: Old Welsh Mervyn

English American Welsh

✓ All Clear

Rex Rank #793

Marvin Rank #672

Marvin is more popular, ranked #672 vs #793 for Rex.

Is Rex or Marvin more popular?

Marvin is more popular, ranked #672 compared to Rex at #793 in the United States.

What do Rex and Marvin mean?

Rex means "king" (Latin origin). Marvin means "sea fortress, sea friend" (Old Welsh Mervyn origin).

Are Rex and Marvin boy or girl names?

Rex is primarily a boy name. Marvin is primarily a boy name.