Aileen vs Cleo

Baby Name Comparison — 2026

Aileen

Girl #718 Most Popular 2 Syllables

Meaning

"bright, shining light"

Origin: Irish/Greek Helene

Cultural Roots

Irish Scottish English American

Quick Stats

Popularity Rank
#718
Total SSA Count
390
Syllables
2
Formality
Moderate
Nicknames
Ally, Lee, Leenie

Playground Safety Score

15 High Risk

{:type=>:rhyme, :severity=>:medium, :message=>"'Aileen' rhymes with 'mean'"}

Full profile for Aileen →

Popularity Comparison

Aileen Rank #718
Cleo Rank #603

Cleo is more popular, ranked #603 vs #718 for Aileen.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Aileen ___

  • Aileen Rose
  • Aileen Marie
  • Aileen Grace
  • Aileen Patricia
  • Aileen Margaret
  • Aileen Frances

Cleo ___

  • Cleo Rose
  • Cleo Jade
  • Cleo Simone
  • Cleo Fleur
  • Cleo Mae
  • Cleo Pearl

Sibling Name Ideas

Names that pair well as siblings.

If you choose Aileen

Brigid Colleen Fiona Patrick Seamus

If you choose Cleo

Felix Theo Jasper Iris Phoebe

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 Aileen or Cleo more popular?

Cleo is more popular, ranked #603 compared to Aileen at #718 in the United States.

What do Aileen and Cleo mean?

Aileen means "bright, shining light" (Irish/Greek Helene origin). Cleo means "glory, fame" (Greek origin).

Are Aileen and Cleo boy or girl names?

Aileen is primarily a girl name. Cleo is primarily a girl name.

More Comparisons

Cleo vs Aileen Aileen vs Samira Aileen vs Kyra Aileen vs Bethany Aileen vs Azari
← Full profile: Aileen ← Full profile: Cleo Browse all baby names