Caidyn vs Sydney

Baby Name Comparison — 2026

Caidyn

Boy #4,196 Most Popular 2 Syllables

"battle, spirit of battle"

Origin: Welsh Gaelic

American English

✓ All Clear

Boy #4,249 Most Popular 2 Syllables

"wide island"

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

American English Australian

✓ All Clear

Caidyn Rank #4,196

Sydney Rank #4,249

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

Is Caidyn or Sydney more popular?

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

What do Caidyn and Sydney mean?

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

Are Caidyn and Sydney boy or girl names?

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