MallowbyNames

Kathi

KATH-ee · Diminutive of Katherine, meaning 'pure'.

Peak popularity
1958
Usually for
Girls
Trend
Holding steady

Holding steady.

Popularity of Kathi since 1938

Babies named Kathi per year in U.S. Social Security records.

27554982419401960198020002020Most births 1958Girls
Data table (by decade)
DecadeGirls
1930s15
1940s805
1950s4,863
1960s3,319
1970s830
1980s213
1990s59
2000s5
2010s0
2020s0

Meaning & origin

Kathi first entered U.S. birth records in 1938, a short form of Katherine that enjoyed its greatest popularity in the post-World War II era. It reached its highest rank in 1958, when it was given to several hundred baby girls across the country. Since then, usage has declined steadily; by 2025 the name is given to fewer than five newborns per year and no longer appears in national rankings. The trajectory has been stable at very low numbers for decades. Despite its rarity, Kathi remains a familiar and approachable nickname-style name, particularly among families who favor classic, traditional roots.

Kathi is a short form of Katherine or Kathleen, which derive from the Greek name Aikaterine. The name's meaning is traditionally associated with the Greek word katharos, meaning 'pure'. The name gained popularity in English-speaking countries through various saints and has been used as an independent given name since the 19th century.

Where Kathi is most popular

Births per 100,000 girls by state. Press play or drag the slider to watch it move across the decades. The lightest shade means too few recorded births.

2020s
Fewermore per 100k girlstoo few births

Nicknames & variants

Nicknames: Kat, Katie, Kitty

Variants: Cathy, Kathy, Kathie

Sibling names for Kathi

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

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

K is for Kathi, our favorite little girl.

K is for Kathi…”

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

Make Kathi's book

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

Questions parents ask

What does the name Kathi mean?
Kathi is a diminutive of Katherine, which means 'pure'.
How popular is the name Kathi?
Kathi peaked in popularity in 1958, but is now rarely used and does not rank in the top 1000.
Is Kathi a boy or girl name?
Kathi is almost exclusively used as a girl's name.