MallowbyNames

Kathreen

KATH-reen · Variant of Katherine, meaning 'pure' (from Greek katharos).

Peak popularity
1912
Usually for
Girls
Trend
Holding steady

Holding steady.

Popularity of Kathreen since 1912

Babies named Kathreen per year in U.S. Social Security records. Raw births topped out in 1950, but relative to how few babies were recorded back then, Kathreen's real moment was 1912.

4812192019602000Most births 1950Girls
Data table (by decade)
DecadeGirls
1910s20
1920s33
1930s16
1940s62
1950s80
1960s46
1970s23
1980s53
1990s33
2000s6
2010s0
2020s0

Meaning & origin

Kathreen is a less common spelling variant of the enduring classic Katherine. The name first entered U.S. birth records in 1912, the same year it reached its peak usage. While it has never appeared in the national top 1,000 rankings, its scarcity may appeal to parents seeking a familiar sound with a distinctive spelling. The trajectory of the name has been stable over the decades, with no recent upswing in popularity. This spelling variation retains the core pronunciation and heritage of Katherine, a name with centuries of history across the English-speaking world.

Kathreen is a spelling variant of Katherine, which derives from the Greek Aikaterinē. The name was early associated with the Greek katharos meaning 'pure.' It entered English via French and Latin, with many spelling variations emerging over centuries. Kathreen was recorded in the United States as early as 1912.

Nicknames & variants

Nicknames: Kathy, Kat, Katie, Rena

Variants: Catherine, Kathryn, Katherine, Katharine, Cathryn

Sibling names for Kathreen

Names that share Kathreen's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

K is for Kathreen, our favorite little girl.

K is for Kathreen…”

In a Mallowby alphabet book, Kathreen's letter becomes Kathreen's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Kathreen's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does the name Kathreen mean?
Kathreen is a variant of Katherine, which is traditionally interpreted as 'pure,' from the Greek word katharos.
How popular is the name Kathreen?
Kathreen was first recorded in the Social Security data in 1912 but has never ranked among the top 1,000 names. As of 2025, it remains rare.
Is Kathreen a boy or girl name?
Kathreen is almost exclusively used as a girl's name, following the pattern of the Katherine family.