Iza vs Kasia

Baby Name Comparison — 2026

Iza

Girl #5,917 Most Popular 2 Syllables

Meaning

"my God is an oath"

Origin: Hebrew

Cultural Roots

Polish Czech Slovak Portuguese Slavic

Quick Stats

Popularity Rank
#5,917
Total SSA Count
21
Syllables
2
Formality
Moderate
Nicknames
Iz, Izzy

Playground Safety Score

✓ All Clear
Full profile for Iza →

Kasia

Girl #5,774 Most Popular 2 Syllables

Meaning

"pure"

Origin: Greek (katharos)

Cultural Roots

Polish Eastern European Czech Slovak

Quick Stats

Popularity Rank
#5,774
Total SSA Count
22
Syllables
2
Formality
Moderate
Nicknames
Kas, Kasi

Playground Safety Score

✓ All Clear
Full profile for Kasia →

Popularity Comparison

Iza Rank #5,917
Kasia Rank #5,774

Kasia is more popular, ranked #5774 vs #5917 for Iza.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Iza ___

  • Iza Marie
  • Iza Sofia
  • Iza Rose
  • Iza Valentina
  • Iza Clara
  • Iza Luz

Kasia ___

  • Kasia Marie
  • Kasia Rose
  • Kasia Irene
  • Kasia Janina
  • Kasia Zofia
  • Kasia Anna

Sibling Name Ideas

Names that pair well as siblings.

If you choose Iza

Mia Zara Luca Nico Petra

If you choose Kasia

Zosia Marta Ania Piotr Marek

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Iza or Kasia more popular?

Kasia is more popular, ranked #5774 compared to Iza at #5917 in the United States.

What do Iza and Kasia mean?

Iza means "my God is an oath" (Hebrew origin). Kasia means "pure" (Greek (katharos) origin).

Are Iza and Kasia boy or girl names?

Iza is primarily a girl name. Kasia is primarily a girl name.

More Comparisons

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← Full profile: Iza ← Full profile: Kasia Browse all baby names