Io vs Kailan

Baby Name Comparison — 2026

Kailan

Boy #2,875 Most Popular 2 Syllables

Meaning

"little slender one"

Origin: Irish Gaelic

Cultural Roots

American Irish English

Quick Stats

Popularity Rank
#2,875
Total SSA Count
44
Syllables
2
Formality
Casual
Nicknames
Kai, Kay

Playground Safety Score

✓ All Clear
Full profile for Kailan →

Popularity Comparison

Io Rank #11,076
Kailan Rank #2,875

Kailan is more popular, ranked #2875 vs #11076 for Io.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Io ___

No pairings available yet.

Kailan ___

  • Kailan James
  • Kailan Thomas
  • Kailan Lee
  • Kailan Cole
  • Kailan Ryan
  • Kailan Patrick

Sibling Name Ideas

Names that pair well as siblings.

If you choose Io

No sibling data available yet.

If you choose Kailan

Declan Ronan Liam Fiona Niamh

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 Io or Kailan more popular?

Kailan is more popular, ranked #2875 compared to Io at #11076 in the United States.

What do Io and Kailan mean?

Kailan means "little slender one" (Irish Gaelic origin).

Are Io and Kailan boy or girl names?

Io is primarily a girl name. Kailan is primarily a boy name.

More Comparisons

Kailan vs Io Io vs Ciera Io vs Tykia Io vs Lataysia Io vs Wisteria
← Full profile: Io ← Full profile: Kailan Browse all baby names