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Sidney vs Cynthia

Baby Name Comparison — 2026

Popularity Comparison

Sidney Rank #1,726
Cynthia Rank #827

Cynthia is more popular, ranked #827 vs #1726 for Sidney.

Frequently Asked Questions

Is Sidney or Cynthia more popular?

Cynthia is more popular, ranked #827 compared to Sidney at #1726 in the United States.

What do Sidney and Cynthia mean?

Sidney means "wide island" (Old English origin). Cynthia means "woman from Mount Cynthus" (Greek origin).

Are Sidney and Cynthia boy or girl names?

Sidney is primarily a girl name. Cynthia is primarily a girl name.

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← Full profile: Sidney ← Full profile: Cynthia Browse all baby names