Sydney vs Caidyn

Baby Name Comparison — 2026

Sydney

Boy #4,249 Most Popular 2 Syllables

"wide island"

Origin: Old English sid (wide) and eg (island)

American English Australian

✓ All Clear

Boy #4,196 Most Popular 2 Syllables

"battle, spirit of battle"

Origin: Welsh Gaelic

American English

✓ All Clear

Sydney Rank #4,249

Caidyn Rank #4,196

Caidyn is more popular, ranked #4196 vs #4249 for Sydney.

Is Sydney or Caidyn more popular?

Caidyn is more popular, ranked #4196 compared to Sydney at #4249 in the United States.

What do Sydney and Caidyn mean?

Sydney means "wide island" (Old English sid (wide) and eg (island) origin). Caidyn means "battle, spirit of battle" (Welsh Gaelic origin).

Are Sydney and Caidyn boy or girl names?

Sydney is primarily a boy name. Caidyn is primarily a boy name.