Kayley vs Olivia

Baby Name Comparison — 2026

Kayley

Girl #3,235 Most Popular 2 Syllables

Meaning

"slim, slender one"

Origin: Irish 'caol'

Cultural Roots

Irish American English Australian

Quick Stats

Popularity Rank
#3,235
Total SSA Count
49
Syllables
2
Formality
Casual
Nicknames
Kay

Playground Safety Score

✓ All Clear
Full profile for Kayley →

Olivia

Girl #1 Most Popular 4 Syllables

Meaning

"olive tree"

Origin: Latin

Cultural Roots

English Italian American

Quick Stats

Popularity Rank
#1
Total SSA Count
14,718
Syllables
4
Formality
Moderate
Nicknames
Liv, Livvy, Oli

Playground Safety Score

✓ All Clear
Full profile for Olivia →

Popularity Comparison

Kayley Rank #3,235
Olivia Rank #1

Olivia is more popular, ranked #1 vs #3235 for Kayley.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Kayley ___

  • Kayley Ann
  • Kayley Marie
  • Kayley Grace
  • Kayley Nicole
  • Kayley Rose
  • Kayley Elizabeth

Olivia ___

  • Olivia Rose
  • Olivia Grace
  • Olivia Jane
  • Olivia Mae
  • Olivia Claire
  • Olivia Jade

Sibling Name Ideas

Names that pair well as siblings.

If you choose Kayley

Hailey Riley Brody Tyler Ashley

If you choose Olivia

Liam Noah Charlotte Emma Sophia

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 Kayley or Olivia more popular?

Olivia is more popular, ranked #1 compared to Kayley at #3235 in the United States.

What do Kayley and Olivia mean?

Kayley means "slim, slender one" (Irish 'caol' origin). Olivia means "olive tree" (Latin origin).

Are Kayley and Olivia boy or girl names?

Kayley is primarily a girl name. Olivia is primarily a girl name.

More Comparisons

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← Full profile: Kayley ← Full profile: Olivia Browse all baby names