Sidney vs Alder

Baby Name Comparison — 2026

Sidney

Boy #1,374 Most Popular 2 Syllables

"from Saint Denis"

Origin: Anglo-Norman French

English American Australian

✓ All Clear

Boy #1,424 Most Popular 2 Syllables

"alder tree"

Origin: Old English alor

English German Scandinavian American

✓ All Clear

Sidney Rank #1,374

Alder Rank #1,424

Sidney is more popular, ranked #1374 vs #1424 for Alder.

Is Sidney or Alder more popular?

Sidney is more popular, ranked #1374 compared to Alder at #1424 in the United States.

What do Sidney and Alder mean?

Sidney means "from Saint Denis" (Anglo-Norman French origin). Alder means "alder tree" (Old English alor origin).

Are Sidney and Alder boy or girl names?

Sidney is primarily a boy name. Alder is primarily a boy name.