Calder vs Lou

Baby Name Comparison — 2026

Calder

Boy #2,005 Most Popular 2 Syllables

"rough waters, hard stream"

Origin: Scottish Gaelic

Scottish English American

✓ All Clear

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'"}

Calder Rank #2,005

Lou Rank #2,123

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

Is Calder or Lou more popular?

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

What do Calder and Lou mean?

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

Are Calder and Lou boy or girl names?

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