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Katja

Girl name · Estonian · German · Greek

Meaningpure · German form of Katherine

US rank
#14,942
Syllables
2
Peak
#2,756 in 1998

5 babies were named Katja in the US in 2025. It has dropped 4,692 places in five years.

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Popularity: U.S. Social Security Administration (babies with 5+ births per year).

Did you know?

A few things about Katja you might not know, from US birth records and Wikipedia. Handy for convincing a partner, or a grandparent.

Katja Riemann

Famous Katja

Katja Riemann

German actress

Choose Katja and your child shares a first name with Katja Riemann, a German actress. A ready-made answer when someone asks “Katja, like who?” Katja Riemann's Wikipedia article is available in 38 languages, a good sign of just how widely known they are.

Read about Katja Riemann on Wikipedia (opens in a new tab)

Photo: Superbass, CC BY-SA 4.0 (opens in a new tab), via Wikimedia Commons

  • How commonAbout 1 in every 322,581 baby girls born in the US in 2025 was named Katja, 5 babies in all. In a typical school of 500 kids, your Katja would very likely be the only one.
  • HistoryKatja first shows up in US birth records in 1963, the first year at least 5 babies got it. It has been in use for 62 years since.
  • Best yearIt was far more popular in 1998, when it ranked #2,756. Today it's #14,942, so it could be due a comeback.
  • Then vs nowKatja was 5.2× more common in 2000 than it is today. In 2000 it was given to about 1 in 62,500 baby girls; in 2025, about 1 in 322,581.
  • TrendKatja has slipped 4,692 places over the last five years and now sits at #14,942. Good news if you want a familiar name that fewer kids will share.
  • MeaningKatja is a German form of Katherine, which means “pure”. Our records link it to Estonian, German and Greek roots.
  • OriginKatja is the #4 most popular Estonian girl name in the US. That's out of 18 Estonian girl and unisex names in our list.

About the name Katja

Katja is a girl name of Estonian, German and Greek origin meaning “pure”. It has 5 letters and 2 syllables, starting with K and ending in “-tja”. US birth records list Katja for girls from 1963 to 2025, in 62 of those 63 years. Its best year was 1998, when it ranked #2,756 among girl names. In 2025 it ranked #14,942, with 5 babies.

Origin:Estonian namesGerman namesGreek names

Katja for girls, by decade
DecadeBabies per millionAbout 1 in
1960s4.3234,899 girls
1970s6.9145,138 girls
1980s5.1196,078 girls
1990s1470,721 girls
2000s1374,627 girls
2010s8.6115,741 girls
2020s5.4186,916 girls

Questions about the name Katja

What does the name Katja mean?

Katja means “pure” in German, as a form of Katherine.

What is the origin of the name Katja?

Katja has Estonian, German, Greek roots in our records. Other Estonian names include Reet, Leena, Laine.

Is Katja a boy or girl name?

Katja is a girl name.

How popular is the name Katja?

Katja ranked #14,942 for US girls in 2025, given to 5 babies. Its best year was 1998 (#2,756).