Rex vs Derrick

Baby Name Comparison — 2026

Rex

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Boy #820 Most Popular 2 Syllables

"ruler of the people"

Origin: Germanic

American English Dutch

8 High Risk

{:type=>:rhyme_pattern, :severity=>:low, :message=>"'Derrick' ending sounds like 'sick/thick/dick'"}

Rex Rank #793

Derrick Rank #820

Rex is more popular, ranked #793 vs #820 for Derrick.

Is Rex or Derrick more popular?

Rex is more popular, ranked #793 compared to Derrick at #820 in the United States.

What do Rex and Derrick mean?

Rex means "king" (Latin origin). Derrick means "ruler of the people" (Germanic origin).

Are Rex and Derrick boy or girl names?

Rex is primarily a boy name. Derrick is primarily a boy name.