Lou vs Calder

Baby Name Comparison — 2026

Lou

Boy #2,123 Most Popular 1 Syllable

"famous warrior"

Origin: Germanic via French Louis

French English American

24 High Risk

{:type=>:nickname, :severity=>:medium, :message=>"'Lou' can be twisted to 'poo'"}

Boy #2,005 Most Popular 2 Syllables

"rough waters, hard stream"

Origin: Scottish Gaelic

Scottish English American

✓ All Clear

Lou Rank #2,123

Calder Rank #2,005

Calder is more popular, ranked #2005 vs #2123 for Lou.

Is Lou or Calder more popular?

Calder is more popular, ranked #2005 compared to Lou at #2123 in the United States.

What do Lou and Calder mean?

Lou means "famous warrior" (Germanic via French Louis origin). Calder means "rough waters, hard stream" (Scottish Gaelic origin).

Are Lou and Calder boy or girl names?

Lou is primarily a boy name. Calder is primarily a boy name.