Kathleen vs Oh

Baby Name Comparison — 2026

Kathleen

Girl #1,110 Most Popular 2 Syllables

Meaning

"pure, virginal"

Origin: Greek katharos via Irish

Cultural Roots

Irish American British Australian

Quick Stats

Popularity Rank
#1,110
Total SSA Count
220
Syllables
2
Formality
Formal
Nicknames
Kathy, Kate, Kat

Playground Safety Score

15 High Risk

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

Full profile for Kathleen →

Oh

Boy #34,086 Most Popular 1 Syllable

Meaning

"from the state of Wu (ancient Chinese kingdom)"

Origin: Chinese/Korean (吳)

Cultural Roots

Korean-American East Asian Modern

Quick Stats

Popularity Rank
#34,086
Total SSA Count
5
Syllables
1
Formality
Casual

Playground Safety Score

✓ All Clear
Full profile for Oh →

Popularity Comparison

Kathleen Rank #1,110
Oh Rank #34,086

Kathleen is more popular, ranked #1110 vs #34086 for Oh.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Kathleen ___

  • Kathleen Anne
  • Kathleen Marie
  • Kathleen Grace
  • Kathleen Rose
  • Kathleen Margaret
  • Kathleen Elizabeth

Oh ___

  • Oh James
  • Oh Robert
  • Oh Lee
  • Oh Sung
  • Oh Hyun

Sibling Name Ideas

Names that pair well as siblings.

If you choose Kathleen

Bridget Maureen Colleen Patrick Michael

If you choose Oh

Ji Min Yun Sol Bom

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 Kathleen or Oh more popular?

Kathleen is more popular, ranked #1110 compared to Oh at #34086 in the United States.

What do Kathleen and Oh mean?

Kathleen means "pure, virginal" (Greek katharos via Irish origin). Oh means "from the state of Wu (ancient Chinese kingdom)" (Chinese/Korean (吳) origin).

Are Kathleen and Oh boy or girl names?

Kathleen is primarily a girl name. Oh is primarily a boy name.

More Comparisons

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← Full profile: Kathleen ← Full profile: Oh Browse all baby names