Rex vs Lucien

Baby Name Comparison — 2026

Rex

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Boy #914 Most Popular 3 Syllables

"light, luminous"

Origin: Latin

French English Romanian Belgian

✓ All Clear

Rex Rank #793

Lucien Rank #914

Rex is more popular, ranked #793 vs #914 for Lucien.

Is Rex or Lucien more popular?

Rex is more popular, ranked #793 compared to Lucien at #914 in the United States.

What do Rex and Lucien mean?

Rex means "king" (Latin origin). Lucien means "light, luminous" (Latin origin).

Are Rex and Lucien boy or girl names?

Rex is primarily a boy name. Lucien is primarily a boy name.